checker-nullness-optional-interning-suppressions.xml

<?xml version="1.0" encoding="UTF-8"?>
<suppressedErrors>
  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/AbstractAutomaticBean.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field configuration</message>
    <lineContent>private Configuration configuration;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/AbstractAutomaticBean.java</fileName>
    <specifier>toarray.nullable.elements.not.newarray</specifier>
    <message>call of toArray on collection of non-null elements yields an array of possibly-null elements; omit the argument to toArray or make it an explicit array constructor</message>
    <lineContent>return result.toArray(CommonUtil.EMPTY_STRING_ARRAY);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/AbstractAutomaticBean.java</fileName>
    <specifier>toarray.nullable.elements.not.newarray</specifier>
    <message>call of toArray on collection of non-null elements yields an array of possibly-null elements; omit the argument to toArray or make it an explicit array constructor</message>
    <lineContent>return result.toArray(EMPTY_MODIFIER_ARRAY);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/Checker.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter args of Checker.getLocalizedMessage.</message>
    <lineContent>getLocalizedMessage(&quot;Checker.setupChildModule&quot;, name, ex.getMessage()), ex);</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull Object
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/Checker.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter args of Violation constructor.</message>
    <lineContent>new String[] {ioe.getMessage()}, null, getClass(), null));</lineContent>
    <details>
      found   : @Initialized @Nullable String @Initialized @NonNull []
      required: @Initialized @NonNull Object @Initialized @NonNull []
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/Checker.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter customMessage of Violation constructor.</message>
    <lineContent>new String[] {ioe.getMessage()}, null, getClass(), null));</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/Checker.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter customMessage of Violation constructor.</message>
    <lineContent>null, getClass(), null));</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/Checker.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter moduleId of Violation constructor.</message>
    <lineContent>new String[] {ioe.getMessage()}, null, getClass(), null));</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/Checker.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter moduleId of Violation constructor.</message>
    <lineContent>null, getClass(), null));</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/Checker.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: basedir, moduleFactory, moduleClassLoader, childContext, fileExtensions, cacheFile</message>
    <lineContent>public Checker() {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/Checker.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to addListener(com.puppycrawl.tools.checkstyle.api.AuditListener) not allowed on the given receiver.</message>
    <lineContent>addListener(counter);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.AbstractAutomaticBean.class) @NonNull Checker
      required: @Initialized @NonNull Checker
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/ConfigurationLoader.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter arg0 of Collection.add.</message>
    <lineContent>fragments.add(null);</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/ConfigurationLoader.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference parentModule</message>
    <lineContent>parentModule.removeChild(recentModule);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/ConfigurationLoader.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference top</message>
    <lineContent>top.addChild(conf);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/ConfigurationLoader.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference top</message>
    <lineContent>top.addMessage(key, value);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/ConfigurationLoader.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference top</message>
    <lineContent>top.addProperty(name, value);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/ConfigurationLoader.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: configuration</message>
    <lineContent>private InternalLoader()</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/DefaultConfiguration.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return children.toArray(</lineContent>
    <details>
      type of expression: @Initialized @Nullable Configuration @Initialized @NonNull []
      method return type: @Initialized @NonNull Configuration @Initialized @NonNull []
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/DefaultConfiguration.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return keySet.toArray(CommonUtil.EMPTY_STRING_ARRAY);</lineContent>
    <details>
      type of expression: @Initialized @Nullable String @Initialized @NonNull []
      method return type: @Initialized @NonNull String @Initialized @NonNull []
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/DefaultConfiguration.java</fileName>
    <specifier>toarray.nullable.elements.not.newarray</specifier>
    <message>call of toArray on collection of non-null elements yields an array of possibly-null elements; omit the argument to toArray or make it an explicit array constructor</message>
    <lineContent>return children.toArray(</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/DefaultConfiguration.java</fileName>
    <specifier>toarray.nullable.elements.not.newarray</specifier>
    <message>call of toArray on collection of non-null elements yields an array of possibly-null elements; omit the argument to toArray or make it an explicit array constructor</message>
    <lineContent>return keySet.toArray(CommonUtil.EMPTY_STRING_ARRAY);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/DefaultContext.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return entries.get(key);</lineContent>
    <details>
      type of expression: @Initialized @Nullable Object
      method return type: @Initialized @NonNull Object
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/DetailAstImpl.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>prevParent.branchTokenTypes = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull BitSet
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/DetailAstImpl.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>firstChild = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull DetailAstImpl
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/DetailAstImpl.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field branchTokenTypes</message>
    <lineContent>private BitSet branchTokenTypes;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/DetailAstImpl.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field firstChild</message>
    <lineContent>private DetailAstImpl firstChild;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/DetailAstImpl.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field hiddenAfter</message>
    <lineContent>private List&lt;Token&gt; hiddenAfter;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/DetailAstImpl.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field hiddenBefore</message>
    <lineContent>private List&lt;Token&gt; hiddenBefore;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/DetailAstImpl.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field nextSibling</message>
    <lineContent>private DetailAstImpl nextSibling;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/DetailAstImpl.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field parent</message>
    <lineContent>private DetailAstImpl parent;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/DetailAstImpl.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field previousSibling</message>
    <lineContent>private DetailAstImpl previousSibling;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/DetailAstImpl.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field text</message>
    <lineContent>private String text;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/DetailAstImpl.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return returnValue;</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailAST
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/DetailAstImpl.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return returnList;</lineContent>
    <details>
      type of expression: @Initialized @Nullable List&lt;@Initialized @NonNull Token&gt;
      method return type: @Initialized @NonNull List&lt;@Initialized @NonNull Token&gt;
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/DetailAstImpl.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return returnList;</lineContent>
    <details>
      type of expression: @Initialized @Nullable List&lt;@Initialized @NonNull Token&gt;
      method return type: @Initialized @NonNull List&lt;@Initialized @NonNull Token&gt;
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavaAstVisitor.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter child of DetailAstImpl.addChild.</message>
    <lineContent>bop.addChild(descendantList.poll());</lineContent>
    <details>
      found   : @Initialized @Nullable DetailAstImpl
      required: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavaAstVisitor.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field child</message>
    <lineContent>private DetailAstImpl child;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavaAstVisitor.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field root</message>
    <lineContent>private DetailAstImpl root;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavaAstVisitor.java</fileName>
    <specifier>introduce.eliminate</specifier>
    <message>It is bad style to create an Optional just to chain methods to get a non-optional value.</message>
    <lineContent>.orElseGet(() -&gt; createImaginary(TokenTypes.ELIST));</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavaAstVisitor.java</fileName>
    <specifier>introduce.eliminate</specifier>
    <message>It is bad style to create an Optional just to chain methods to get a non-optional value.</message>
    <lineContent>.orElseGet(() -&gt; createImaginary(TokenTypes.ELIST));</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavaAstVisitor.java</fileName>
    <specifier>introduce.eliminate</specifier>
    <message>It is bad style to create an Optional just to chain methods to get a non-optional value.</message>
    <lineContent>.orElseGet(() -&gt; createImaginary(TokenTypes.ELIST));</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavaAstVisitor.java</fileName>
    <specifier>introduce.eliminate</specifier>
    <message>It is bad style to create an Optional just to chain methods to get a non-optional value.</message>
    <lineContent>.orElseGet(() -&gt; createImaginary(TokenTypes.ELIST));</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavaAstVisitor.java</fileName>
    <specifier>introduce.eliminate</specifier>
    <message>It is bad style to create an Optional just to chain methods to get a non-optional value.</message>
    <lineContent>.orElseGet(() -&gt; createImaginary(TokenTypes.ELIST));</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavaAstVisitor.java</fileName>
    <specifier>introduce.eliminate</specifier>
    <message>It is bad style to create an Optional just to chain methods to get a non-optional value.</message>
    <lineContent>.orElseGet(() -&gt; createImaginary(TokenTypes.PARAMETERS));</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavaAstVisitor.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>else if (ctx.children.get(i) == expression) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavaAstVisitor.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>else if (ctx.children.get(i) == expression) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavaAstVisitor.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>if (ctx.children.get(i) == rbrack) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavaAstVisitor.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>if (ctx.children.get(i) == rbrack) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavaAstVisitor.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return annotations;</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailAstImpl
      method return type: @Initialized @NonNull DetailAstImpl
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavaAstVisitor.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return ast;</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailAstImpl
      method return type: @Initialized @NonNull DetailAstImpl
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavaAstVisitor.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return compilationUnit;</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailAstImpl
      method return type: @Initialized @NonNull DetailAstImpl
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavadocDetailNodeParser.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter parent of JavadocDetailNodeParser.createJavadocNode.</message>
    <lineContent>final JavadocNodeImpl rootJavadocNode = createJavadocNode(parseTreeNode, null, -1);</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull DetailNode
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavadocDetailNodeParser.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference stack.peek()</message>
    <lineContent>if (stack.peek().getText().equals(token.getText())) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavadocDetailNodeParser.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field errorMessage</message>
    <lineContent>private ParseErrorMessage errorMessage;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavadocDetailNodeParser.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field firstNonTightHtmlTag</message>
    <lineContent>private Token firstNonTightHtmlTag;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavadocDetailNodeParser.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field parseErrorMessage</message>
    <lineContent>private ParseErrorMessage parseErrorMessage;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavadocDetailNodeParser.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field tree</message>
    <lineContent>private DetailNode tree;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavadocDetailNodeParser.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return offendingToken;</lineContent>
    <details>
      type of expression: @Initialized @Nullable CommonToken
      method return type: @Initialized @NonNull Token
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavadocDetailNodeParser.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return nextSibling;</lineContent>
    <details>
      type of expression: @Initialized @Nullable ParseTree
      method return type: @Initialized @NonNull ParseTree
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavadocPropertiesGenerator.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field inputFile</message>
    <lineContent>private File inputFile;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavadocPropertiesGenerator.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field outputFile</message>
    <lineContent>private File outputFile;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavadocPropertiesGenerator.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return objBlock;</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailAST
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavadocPropertiesGenerator.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return firstSentence;</lineContent>
    <details>
      type of expression: @Initialized @Nullable String
      method return type: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/JavadocPropertiesGenerator.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return firstSentence;</lineContent>
    <details>
      type of expression: @Initialized @Nullable String
      method return type: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/LocalizedMessage.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter loader of ResourceBundle.getBundle.</message>
    <lineContent>return ResourceBundle.getBundle(bundle, sLocale, sourceClass.getClassLoader(),</lineContent>
    <details>
      found   : @Initialized @Nullable ClassLoader
      required: @Initialized @NonNull ClassLoader
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/LocalizedMessage.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>this.args = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull Object @Initialized @NonNull []
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/LocalizedMessage.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return resourceBundle;</lineContent>
    <details>
      type of expression: @Initialized @Nullable ResourceBundle
      method return type: @Initialized @NonNull ResourceBundle
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/Main.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter moduleClassLoader of Main.getRootModule.</message>
    <lineContent>final RootModule rootModule = getRootModule(config.getName(), moduleClassLoader);</lineContent>
    <details>
      found   : @Initialized @Nullable ClassLoader
      required: @Initialized @NonNull ClassLoader
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/Main.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference Checker.class.getPackage()</message>
    <lineContent>Checker.class.getPackage().getName(), moduleClassLoader);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/Main.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference Main.class.getPackage()</message>
    <lineContent>+ Main.class.getPackage().getImplementationVersion());</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/Main.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference Main.class.getPackage()</message>
    <lineContent>private final String packageName = Main.class.getPackage().getName();</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/Main.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference Main.class.getPackage()</message>
    <lineContent>return &quot;Checkstyle version: &quot; + Main.class.getPackage().getImplementationVersion();</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/Main.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference logRecord.getLoggerName()</message>
    <lineContent>return logRecord.getLoggerName().startsWith(packageName);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/Main.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference parentLogger</message>
    <lineContent>parentLogger.addHandler(handler);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/Main.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field configurationFile</message>
    <lineContent>private String configurationFile;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/Main.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field files</message>
    <lineContent>private List&lt;File&gt; files;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/Main.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field outputPath</message>
    <lineContent>private Path outputPath;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/Main.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field propertiesFile</message>
    <lineContent>private File propertiesFile;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/Main.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field suppressionLineColumnNumber</message>
    <lineContent>private String suppressionLineColumnNumber;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/Main.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field xpath</message>
    <lineContent>private String xpath;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/Main.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return result;</lineContent>
    <details>
      type of expression: @Initialized @Nullable Configuration
      method return type: @Initialized @NonNull Configuration
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/PackageObjectFactory.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter arg0 of Set.contains.</message>
    <lineContent>if (packageNames.contains(null)) {</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull Object
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/PackageObjectFactory.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter args of LocalizedMessage constructor.</message>
    <lineContent>UNABLE_TO_INSTANTIATE_EXCEPTION_MESSAGE, name, attemptedNames);</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull Object
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/PackageObjectFactory.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: thirdPartyNameToFullModuleNames</message>
    <lineContent>public PackageObjectFactory(Set&lt;String&gt; packageNames, ClassLoader moduleClassLoader,</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/PackageObjectFactory.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: thirdPartyNameToFullModuleNames, moduleLoadOption</message>
    <lineContent>public PackageObjectFactory(String packageName, ClassLoader moduleClassLoader) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/PackageObjectFactory.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return instance;</lineContent>
    <details>
      type of expression: @Initialized @Nullable Object
      method return type: @Initialized @NonNull Object
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/PackageObjectFactory.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return instance;</lineContent>
    <details>
      type of expression: @Initialized @Nullable Object
      method return type: @Initialized @NonNull Object
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/PackageObjectFactory.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return instance;</lineContent>
    <details>
      type of expression: @Initialized @Nullable Object
      method return type: @Initialized @NonNull Object
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/PackageObjectFactory.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return instance;</lineContent>
    <details>
      type of expression: @Initialized @Nullable Object
      method return type: @Initialized @NonNull Object
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/PropertiesExpander.java</fileName>
    <specifier>methodref.return</specifier>
    <message>Incompatible return type</message>
    <lineContent>Collectors.toUnmodifiableMap(Function.identity(), properties::getProperty));</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
      Consequence: method in @Initialized @NonNull Properties
      @Initialized @Nullable String getProperty(@Initialized @NonNull Properties this, @Initialized @NonNull String p0)
      is not a valid method reference for method in @Initialized @NonNull Function&lt;/*INFERENCE FAILED for:*/ ? extends @Initialized @Nullable Object, @Initialized @NonNull String&gt;
      @Initialized @NonNull String apply(@Initialized @NonNull Function&lt;/*INFERENCE FAILED for:*/ ? extends @Initialized @Nullable Object, @Initialized @NonNull String&gt; this, /*INFERENCE FAILED for:*/ ? extends @Initialized @Nullable Object p0)
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/PropertiesExpander.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return values.get(name);</lineContent>
    <details>
      type of expression: @Initialized @Nullable String
      method return type: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/PropertyCacheFile.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference cachedHashSum</message>
    <lineContent>if (!cachedHashSum.equals(contentHashSum)) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/PropertyCacheFile.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: configHash</message>
    <lineContent>public PropertyCacheFile(Configuration config, String fileName) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/PropertyCacheFile.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return details.getProperty(name);</lineContent>
    <details>
      type of expression: @Initialized @Nullable String
      method return type: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/SarifLogger.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference SarifLogger.class.getPackage()</message>
    <lineContent>final String version = SarifLogger.class.getPackage().getImplementationVersion();</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/SuppressionsStringPrinter.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter s of Integer.parseInt.</message>
    <lineContent>final int columnNumber = Integer.parseInt(matcher.group(2));</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/SuppressionsStringPrinter.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter s of Integer.parseInt.</message>
    <lineContent>final int lineNumber = Integer.parseInt(matcher.group(1));</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/TreeWalker.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: childContext, moduleFactory</message>
    <lineContent>public TreeWalker() {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/TreeWalker.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to setFileExtensions(java.lang.String...) not allowed on the given receiver.</message>
    <lineContent>setFileExtensions(&quot;java&quot;);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.api.AbstractFileSetCheck.class) @NonNull AbstractFileSetCheck
      required: @Initialized @NonNull AbstractFileSetCheck
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/TreeWalker.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return visitors;</lineContent>
    <details>
      type of expression: @Initialized @Nullable Collection&lt;@Initialized @NonNull AbstractCheck&gt;
      method return type: @Initialized @NonNull Collection&lt;@Initialized @NonNull AbstractCheck&gt;
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/XMLLogger.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter messages of XMLLogger.writeFileMessages.</message>
    <lineContent>writeFileMessages(fileName, messages);</lineContent>
    <details>
      found   : @Initialized @Nullable FileMessages
      required: @Initialized @NonNull FileMessages
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/XMLLogger.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference XMLLogger.class.getPackage()</message>
    <lineContent>final String version = XMLLogger.class.getPackage().getImplementationVersion();</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/XmlLoader.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter byteStream of InputSource constructor.</message>
    <lineContent>inputSource = new InputSource(dtdIs);</lineContent>
    <details>
      found   : @Initialized @Nullable InputStream
      required: @Initialized @NonNull InputStream
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/XmlLoader.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter handler of XmlLoader.createXmlReader.</message>
    <lineContent>parser = createXmlReader(this);</lineContent>
    <details>
      found   : @UnderInitialization(org.xml.sax.helpers.DefaultHandler.class) @NonNull XmlLoader
      required: @Initialized @NonNull DefaultHandler
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/XmlLoader.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference loader</message>
    <lineContent>final InputStream dtdIs = loader.getResourceAsStream(dtdResourceName);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/XmlLoader.java</fileName>
    <specifier>override.param</specifier>
    <message>Incompatible parameter type for publicId.</message>
    <lineContent>public InputSource resolveEntity(String publicId, String systemId) {</lineContent>
    <details>
      found   : @Initialized @NonNull String
      required: @Initialized @Nullable String
      Consequence: method in @Initialized @NonNull XmlLoader
      @Initialized @NonNull InputSource resolveEntity(@Initialized @NonNull XmlLoader this, @Initialized @NonNull String p0, @Initialized @NonNull String p1)
      cannot override method in @Initialized @NonNull EntityResolver
      @Initialized @Nullable InputSource resolveEntity(@Initialized @NonNull EntityResolver this, @Initialized @Nullable String p0, @Initialized @NonNull String p1) throws @Initialized @NonNull SAXException@Initialized @NonNull IOException
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/XmlLoader.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return inputSource;</lineContent>
    <details>
      type of expression: @Initialized @Nullable InputSource
      method return type: @Initialized @NonNull InputSource
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/XpathFileGeneratorAstFilter.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return MESSAGE_QUERY_MAP.get(event.getViolation());</lineContent>
    <details>
      type of expression: @Initialized @Nullable String
      method return type: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/ant/CheckstyleAntTask.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter checkstyleVersion of CheckstyleAntTask.realExecute.</message>
    <lineContent>realExecute(version);</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/ant/CheckstyleAntTask.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter moduleClassLoader of PackageObjectFactory constructor.</message>
    <lineContent>Checker.class.getPackage().getName() + &quot;.&quot;, moduleClassLoader);</lineContent>
    <details>
      found   : @Initialized @Nullable ClassLoader
      required: @Initialized @NonNull ClassLoader
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/ant/CheckstyleAntTask.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter moduleClassLoader of RootModule.setModuleClassLoader.</message>
    <lineContent>rootModule.setModuleClassLoader(moduleClassLoader);</lineContent>
    <details>
      found   : @Initialized @Nullable ClassLoader
      required: @Initialized @NonNull ClassLoader
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/ant/CheckstyleAntTask.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference Checker.class.getPackage()</message>
    <lineContent>Checker.class.getPackage().getName() + &quot;.&quot;, moduleClassLoader);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/ant/CheckstyleAntTask.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference CheckstyleAntTask.class.getPackage()</message>
    <lineContent>final String version = CheckstyleAntTask.class.getPackage().getImplementationVersion();</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/ant/CheckstyleAntTask.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field config</message>
    <lineContent>private String config;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/ant/CheckstyleAntTask.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field failureProperty</message>
    <lineContent>private String failureProperty;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/ant/CheckstyleAntTask.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field fileName</message>
    <lineContent>private String fileName;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/ant/CheckstyleAntTask.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field key</message>
    <lineContent>private String key;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/ant/CheckstyleAntTask.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field properties</message>
    <lineContent>private File properties;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/ant/CheckstyleAntTask.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field toFile</message>
    <lineContent>private File toFile;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/ant/CheckstyleAntTask.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field type</message>
    <lineContent>private FormatterType type;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/ant/CheckstyleAntTask.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field value</message>
    <lineContent>private String value;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/api/AbstractCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter customMessage of Violation constructor.</message>
    <lineContent>getCustomMessages().get(key)));</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/api/AbstractCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter customMessage of Violation constructor.</message>
    <lineContent>getCustomMessages().get(key)));</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/api/AbstractCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter customMessage of Violation constructor.</message>
    <lineContent>getCustomMessages().get(key)));</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/api/AbstractCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field fileContents</message>
    <lineContent>private FileContents fileContents;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/api/AbstractCheck.java</fileName>
    <specifier>type.argument</specifier>
    <message>incompatible type argument for type parameter T of ThreadLocal.</message>
    <lineContent>private final ThreadLocal&lt;FileContext&gt; context = ThreadLocal.withInitial(FileContext::new);</lineContent>
    <details>
      found   : @Initialized @NonNull FileContext
      required: [extends @Initialized @Nullable Object super null (NullType)]
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/api/AbstractFileSetCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter customMessage of Violation constructor.</message>
    <lineContent>getCustomMessages().get(key)));</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/api/AbstractFileSetCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter customMessage of Violation constructor.</message>
    <lineContent>getCustomMessages().get(key)));</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/api/AbstractFileSetCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field fileContents</message>
    <lineContent>private FileContents fileContents;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/api/AbstractFileSetCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field fileExtensions</message>
    <lineContent>private String[] fileExtensions;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/api/AbstractFileSetCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field messageDispatcher</message>
    <lineContent>private MessageDispatcher messageDispatcher;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/api/AbstractFileSetCheck.java</fileName>
    <specifier>type.argument</specifier>
    <message>incompatible type argument for type parameter T of ThreadLocal.</message>
    <lineContent>private final ThreadLocal&lt;FileContext&gt; context = ThreadLocal.withInitial(FileContext::new);</lineContent>
    <details>
      found   : @Initialized @NonNull FileContext
      required: [extends @Initialized @Nullable Object super null (NullType)]
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/api/AbstractViolationReporter.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field id</message>
    <lineContent>private String id;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/api/AuditEvent.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter fileName of AuditEvent constructor.</message>
    <lineContent>this(source, null);</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/api/AuditEvent.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter violation of AuditEvent constructor.</message>
    <lineContent>this(src, fileName, null);</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull Violation
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/api/FileContents.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return javadocComments.get(lineNo);</lineContent>
    <details>
      type of expression: @Initialized @Nullable TextBlock
      method return type: @Initialized @NonNull TextBlock
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/api/FileText.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>lines = textLines.toArray(CommonUtil.EMPTY_STRING_ARRAY);</lineContent>
    <details>
      found   : @Initialized @Nullable String @Initialized @NonNull []
      required: @Initialized @NonNull String @Initialized @NonNull []
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/api/FileText.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>this.lines = lines.toArray(CommonUtil.EMPTY_STRING_ARRAY);</lineContent>
    <details>
      found   : @Initialized @Nullable String @Initialized @NonNull []
      required: @Initialized @NonNull String @Initialized @NonNull []
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/api/FileText.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>charset = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull Charset
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/api/FileText.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: lineBreaks</message>
    <lineContent>public FileText(File file, List&lt;String&gt; lines) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/api/FileText.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: lineBreaks</message>
    <lineContent>public FileText(File file, String charsetName) throws IOException {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/api/FileText.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: lineBreaks</message>
    <lineContent>public FileText(FileText fileText) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/api/FileText.java</fileName>
    <specifier>toarray.nullable.elements.not.newarray</specifier>
    <message>call of toArray on collection of non-null elements yields an array of possibly-null elements; omit the argument to toArray or make it an explicit array constructor</message>
    <lineContent>lines = textLines.toArray(CommonUtil.EMPTY_STRING_ARRAY);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/api/FileText.java</fileName>
    <specifier>toarray.nullable.elements.not.newarray</specifier>
    <message>call of toArray on collection of non-null elements yields an array of possibly-null elements; omit the argument to toArray or make it an explicit array constructor</message>
    <lineContent>this.lines = lines.toArray(CommonUtil.EMPTY_STRING_ARRAY);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/api/FullIdent.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: detailAst</message>
    <lineContent>private FullIdent() {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/api/LineColumn.java</fileName>
    <specifier>override.param</specifier>
    <message>Incompatible parameter type for other.</message>
    <lineContent>public boolean equals(Object other) {</lineContent>
    <details>
      found   : @Initialized @NonNull Object
      required: @Initialized @Nullable Object
      Consequence: method in @Initialized @NonNull LineColumn
      @Initialized @NonNull boolean equals(@Initialized @NonNull LineColumn this, @Initialized @NonNull Object p0)
      cannot override method in @Initialized @NonNull Object
      @Initialized @NonNull boolean equals(@Initialized @NonNull Object this, @Initialized @Nullable Object p0)
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/api/Violation.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>this.args = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull Object @Initialized @NonNull []
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/api/Violation.java</fileName>
    <specifier>override.param</specifier>
    <message>Incompatible parameter type for object.</message>
    <lineContent>public boolean equals(Object object) {</lineContent>
    <details>
      found   : @Initialized @NonNull Object
      required: @Initialized @Nullable Object
      Consequence: method in @Initialized @NonNull Violation
      @Initialized @NonNull boolean equals(@Initialized @NonNull Violation this, @Initialized @NonNull Object p0)
      cannot override method in @Initialized @NonNull Object
      @Initialized @NonNull boolean equals(@Initialized @NonNull Object this, @Initialized @Nullable Object p0)
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/AvoidEscapedUnicodeCharactersCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field blockComments</message>
    <lineContent>private Map&lt;Integer, List&lt;TextBlock&gt;&gt; blockComments;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/AvoidEscapedUnicodeCharactersCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field singlelineComments</message>
    <lineContent>private Map&lt;Integer, TextBlock&gt; singlelineComments;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/DescendantTokenCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field maximumMessage</message>
    <lineContent>private String maximumMessage;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/DescendantTokenCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field minimumMessage</message>
    <lineContent>private String minimumMessage;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/OrderedPropertiesCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter args of AbstractFileSetCheck.log.</message>
    <lineContent>log(1, MSG_IO_EXCEPTION_KEY, file.getPath(), ex.getLocalizedMessage());</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull Object
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/OrderedPropertiesCheck.java</fileName>
    <specifier>contracts.postcondition</specifier>
    <message>postcondition of put is not satisfied.</message>
    <lineContent>public synchronized Object put(Object key, Object value) {</lineContent>
    <details>
      found   : key is @UnknownKeyFor
      required: key is @KeyFor(&quot;this&quot;)
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/OrderedPropertiesCheck.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to setFileExtensions(java.lang.String...) not allowed on the given receiver.</message>
    <lineContent>setFileExtensions(&quot;properties&quot;);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.OrderedPropertiesCheck.class) @NonNull AbstractFileSetCheck
      required: @Initialized @NonNull AbstractFileSetCheck
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/OrderedPropertiesCheck.java</fileName>
    <specifier>override.return</specifier>
    <message>Incompatible return type.</message>
    <lineContent>public Enumeration&lt;Object&gt; keys() {</lineContent>
    <details>
      found   : Enumeration&lt;Object&gt;
      required: Enumeration&lt;@KeyFor(&quot;this&quot;) Object&gt;
      Consequence: method in SequencedProperties
      Enumeration&lt;Object&gt; keys(SequencedProperties this)
      cannot override method in Hashtable&lt;Object, Object&gt;
      Enumeration&lt;@KeyFor(&quot;this&quot;) Object&gt; keys(Hashtable&lt;Object, Object&gt; this)
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/OrderedPropertiesCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return null;</lineContent>
    <details>
      type of expression: null (NullType)
      method return type: @Initialized @NonNull Object
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/OuterTypeFilenameCheck.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>wrongType = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/OuterTypeFilenameCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field fileName</message>
    <lineContent>private String fileName;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/OuterTypeFilenameCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field wrongType</message>
    <lineContent>private DetailAST wrongType;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/SuppressWarningsHolder.java</fileName>
    <specifier>type.argument</specifier>
    <message>incompatible type argument for type parameter T of ThreadLocal.</message>
    <lineContent>private static final ThreadLocal&lt;List&lt;Entry&gt;&gt; ENTRIES =</lineContent>
    <details>
      found   : @Initialized @NonNull List&lt;@Initialized @NonNull Entry&gt;
      required: [extends @Initialized @Nullable Object super null (NullType)]
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/TrailingCommentCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field legalComment</message>
    <lineContent>private Pattern legalComment;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/TranslationCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter args of Violation constructor.</message>
    <lineContent>args,</lineContent>
    <details>
      found   : @Initialized @NonNull String @Initialized @Nullable []
      required: @Initialized @NonNull Object @Initialized @NonNull []
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/TranslationCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter customMessage of Violation constructor.</message>
    <lineContent>getClass(), null);</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/TranslationCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter languageCode of TranslationCheck.getMissingFileName.</message>
    <lineContent>getMissingFileName(bundle, null)</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/TranslationCheck.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>args = new String[] {exception.getMessage()};</lineContent>
    <details>
      found   : @Initialized @Nullable String @Initialized @NonNull []
      required: @Initialized @NonNull String @UnknownInitialization @Nullable []
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/TranslationCheck.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to setFileExtensions(java.lang.String...) not allowed on the given receiver.</message>
    <lineContent>setFileExtensions(&quot;properties&quot;);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.api.AbstractFileSetCheck.class) @NonNull AbstractFileSetCheck
      required: @Initialized @NonNull AbstractFileSetCheck
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/UncommentedMainCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter ast of FullIdent.createFullIdent.</message>
    <lineContent>packageName = FullIdent.createFullIdent(null);</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/UncommentedMainCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field currentClass</message>
    <lineContent>private String currentClass;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/UncommentedMainCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field packageName</message>
    <lineContent>private FullIdent packageName;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/UniquePropertiesCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter args of AbstractFileSetCheck.log.</message>
    <lineContent>ex.getLocalizedMessage());</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull Object
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/UniquePropertiesCheck.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to setFileExtensions(java.lang.String...) not allowed on the given receiver.</message>
    <lineContent>setFileExtensions(&quot;properties&quot;);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.UniquePropertiesCheck.class) @NonNull AbstractFileSetCheck
      required: @Initialized @NonNull AbstractFileSetCheck
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/annotation/MissingOverrideCheck.java</fileName>
    <specifier>introduce.eliminate</specifier>
    <message>It is bad style to create an Optional just to chain methods to get a non-optional value.</message>
    <lineContent>.orElse(modifiers);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/blocks/NeedBracesCheck.java</fileName>
    <specifier>introduce.eliminate</specifier>
    <message>It is bad style to create an Optional just to chain methods to get a non-optional value.</message>
    <lineContent>.orElse(Boolean.TRUE);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/blocks/RightCurlyCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter lcurly of Details constructor.</message>
    <lineContent>return new Details(lcurly.orElse(null), rcurly, nextToken.orElse(null), true);</lineContent>
    <details>
      found   : @Initialized @Nullable DetailAST
      required: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/blocks/RightCurlyCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter nextToken of Details constructor.</message>
    <lineContent>return new Details(lcurly, rcurly, nextToken, true);</lineContent>
    <details>
      found   : @Initialized @Nullable DetailAST
      required: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/blocks/RightCurlyCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter nextToken of Details constructor.</message>
    <lineContent>return new Details(lcurly.orElse(null), rcurly, nextToken.orElse(null), true);</lineContent>
    <details>
      found   : @Initialized @Nullable DetailAST
      required: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/blocks/RightCurlyCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter rcurly of Details constructor.</message>
    <lineContent>return new Details(lcurly, rcurly, getNextToken(ast), true);</lineContent>
    <details>
      found   : @Initialized @Nullable DetailAST
      required: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/blocks/RightCurlyCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter rcurly of Details constructor.</message>
    <lineContent>return new Details(lcurly, rcurly, nextToken, false);</lineContent>
    <details>
      found   : @Initialized @Nullable DetailAST
      required: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/blocks/RightCurlyCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter rcurly of Details constructor.</message>
    <lineContent>return new Details(lcurly, rcurly, nextToken, shouldCheckLastRcurly);</lineContent>
    <details>
      found   : @Initialized @Nullable DetailAST
      required: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/blocks/RightCurlyCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter rcurly of Details constructor.</message>
    <lineContent>return new Details(lcurly, rcurly, nextToken, true);</lineContent>
    <details>
      found   : @Initialized @Nullable DetailAST
      required: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/blocks/RightCurlyCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter rcurly of Details constructor.</message>
    <lineContent>return new Details(lcurly.orElse(null), rcurly, nextToken.orElse(null), true);</lineContent>
    <details>
      found   : @Initialized @Nullable DetailAST
      required: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/blocks/RightCurlyCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return next;</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailAST
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/DeclarationOrderCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter state of DeclarationOrderCheck.processModifiersState.</message>
    <lineContent>final boolean isStateValid = processModifiersState(ast, state);</lineContent>
    <details>
      found   : @Initialized @Nullable ScopeState
      required: @Initialized @NonNull ScopeState
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/DeclarationOrderCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference state</message>
    <lineContent>if (state.currentScopeState &gt; STATE_CTOR_DEF) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/DeclarationOrderCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference state</message>
    <lineContent>state.currentScopeState = STATE_METHOD_DEF;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/DeclarationOrderCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field classFieldNames</message>
    <lineContent>private Set&lt;String&gt; classFieldNames;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/DeclarationOrderCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field scopeStates</message>
    <lineContent>private Deque&lt;ScopeState&gt; scopeStates;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/EqualsAvoidNullCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter parent of FieldFrame constructor.</message>
    <lineContent>currentFrame = new FieldFrame(null);</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull FieldFrame
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/EqualsAvoidNullCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field currentFrame</message>
    <lineContent>private FieldFrame currentFrame;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/EqualsAvoidNullCheck.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: frameName</message>
    <lineContent>private FieldFrame(FieldFrame parent) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/EqualsAvoidNullCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return fieldNameToAst.get(name);</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailAST
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/EqualsAvoidNullCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return fieldType;</lineContent>
    <details>
      type of expression: @Initialized @Nullable String
      method return type: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/FallThroughCheck.java</fileName>
    <specifier>introduce.eliminate</specifier>
    <message>It is bad style to create an Optional just to chain methods to get a non-optional value.</message>
    <lineContent>.isPresent();</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/FinalLocalVariableCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference candidate</message>
    <lineContent>shouldRemove = candidate.alreadyAssigned;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/FinalLocalVariableCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference currentScopeAssignedVariables.peek()</message>
    <lineContent>currentScopeAssignedVariables.peek().add(ast);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/FinalLocalVariableCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference currentScopeAssignedVariables.peek()</message>
    <lineContent>final Iterator&lt;DetailAST&gt; iterator = currentScopeAssignedVariables.peek().iterator();</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/FinalLocalVariableCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference scopeData</message>
    <lineContent>scopeData.uninitializedVariables.forEach(prevScopeUninitializedVariableData::push);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/FinalLocalVariableCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference scopeStack.peek()</message>
    <lineContent>containsBreak = scopeStack.peek().containsBreak;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/FinalLocalVariableCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference scopeStack.peek()</message>
    <lineContent>final Map&lt;String, FinalVariableCandidate&gt; scope = scopeStack.peek().scope;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/FinalLocalVariableCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference scopeStack.peek()</message>
    <lineContent>final Map&lt;String, FinalVariableCandidate&gt; scope = scopeStack.peek().scope;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/FinalLocalVariableCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference scopeStack.peek()</message>
    <lineContent>scopeStack.peek().containsBreak = true;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/FinalLocalVariableCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference scopeStack.peek()</message>
    <lineContent>scopeStack.peek().uninitializedVariables.add(astNode);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/FinalLocalVariableCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>== ast.getParent()) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/FinalLocalVariableCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>if (currAstLoopAstParent == currVarLoopAstParent) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/FinalLocalVariableCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>if (currAstLoopAstParent == currVarLoopAstParent) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/FinalLocalVariableCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>result = findLastCaseGroupWhichContainsSlist(ast.getParent()) != ast;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/FinalLocalVariableCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>result = findLastCaseGroupWhichContainsSlist(ast.getParent()) != ast;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/FinalLocalVariableCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>return classOrMethodOfAst1 == classOrMethodOfAst2 &amp;&amp; ast1.getText().equals(ast2.getText());</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/FinalLocalVariableCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>return classOrMethodOfAst1 == classOrMethodOfAst2 &amp;&amp; ast1.getText().equals(ast2.getText());</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/FinalLocalVariableCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>|| ast.getParent().getParent().findFirstToken(TokenTypes.CASE_GROUP)</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/FinalLocalVariableCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>|| findLastCaseGroupWhichContainsSlist(parentAst.getParent()) == parentAst) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/FinalLocalVariableCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>|| findLastCaseGroupWhichContainsSlist(parentAst.getParent()) == parentAst) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/FinalLocalVariableCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return returnValue;</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailAST
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/HiddenFieldCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter frameName of FieldFrame constructor.</message>
    <lineContent>final FieldFrame newFrame = new FieldFrame(frame, isStaticInnerType, frameName);</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/HiddenFieldCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter frameName of FieldFrame constructor.</message>
    <lineContent>frame = new FieldFrame(null, true, null);</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/HiddenFieldCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter parent of FieldFrame constructor.</message>
    <lineContent>frame = new FieldFrame(null, true, null);</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull FieldFrame
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/HiddenFieldCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field frame</message>
    <lineContent>private FieldFrame frame;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/HiddenFieldCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field ignoreFormat</message>
    <lineContent>private Pattern ignoreFormat;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/IllegalInstantiationCheck.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>pkgName = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/IllegalInstantiationCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field pkgName</message>
    <lineContent>private String pkgName;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/IllegalInstantiationCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return fullClassName;</lineContent>
    <details>
      type of expression: @Initialized @Nullable String
      method return type: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/IllegalInstantiationCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return illegalType;</lineContent>
    <details>
      type of expression: @Initialized @Nullable String
      method return type: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/MagicNumberCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>while (astNode != constantDefAST) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/MagicNumberCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>while (astNode != constantDefAST) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/MagicNumberCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return constantDef;</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailAST
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/MatchXpathCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field xpathExpression</message>
    <lineContent>private XPathExpression xpathExpression;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/ModifiedControlVariableCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return variableStack.peek();</lineContent>
    <details>
      type of expression: @Initialized @Nullable Deque&lt;@Initialized @NonNull String&gt;
      method return type: @Initialized @NonNull Deque&lt;@Initialized @NonNull String&gt;
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/MultipleStringLiteralsCheck.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>this.ignoreStringsRegexp = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull Pattern
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/MultipleStringLiteralsCheck.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: ignoreStringsRegexp</message>
    <lineContent>public MultipleStringLiteralsCheck() {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/MultipleStringLiteralsCheck.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to setIgnoreStringsRegexp(java.util.regex.Pattern) not allowed on the given receiver.</message>
    <lineContent>setIgnoreStringsRegexp(Pattern.compile(&quot;^\&quot;\&quot;$&quot;));</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.api.AbstractCheck.class) @NonNull MultipleStringLiteralsCheck
      required: @Initialized @NonNull MultipleStringLiteralsCheck
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/OverloadMethodsDeclarationOrderCheck.java</fileName>
    <specifier>unboxing.of.nullable</specifier>
    <message>unboxing a possibly-null reference methodLineNumberMap.get(methodName)</message>
    <lineContent>methodLineNumberMap.get(methodName);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/ParameterAssignmentCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field parameterNames</message>
    <lineContent>private Set&lt;String&gt; parameterNames;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter arg0 of Deque.push.</message>
    <lineContent>current.push(frames.get(ast));</lineContent>
    <details>
      found   : @Initialized @Nullable AbstractFrame
      required: @Initialized @NonNull AbstractFrame
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter arg0 of Deque.push.</message>
    <lineContent>current.push(frames.get(ast));</lineContent>
    <details>
      found   : @Initialized @Nullable AbstractFrame
      required: @Initialized @NonNull AbstractFrame
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter arg1 of Map.put.</message>
    <lineContent>frames.put(ast, frameStack.poll());</lineContent>
    <details>
      found   : @Initialized @Nullable AbstractFrame
      required: @Initialized @NonNull AbstractFrame
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter arg1 of Map.put.</message>
    <lineContent>frames.put(ast, frameStack.poll());</lineContent>
    <details>
      found   : @Initialized @Nullable AbstractFrame
      required: @Initialized @NonNull AbstractFrame
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter frame of RequireThisCheck.collectMethodDeclarations.</message>
    <lineContent>collectMethodDeclarations(frameStack, ast, frame);</lineContent>
    <details>
      found   : @Initialized @Nullable AbstractFrame
      required: @Initialized @NonNull AbstractFrame
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter frame of RequireThisCheck.collectVariableDeclarations.</message>
    <lineContent>collectVariableDeclarations(ast, frame);</lineContent>
    <details>
      found   : @Initialized @Nullable AbstractFrame
      required: @Initialized @NonNull AbstractFrame
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter frame of RequireThisCheck.findFrame.</message>
    <lineContent>frame = findFrame(frame, name, lookForMethod);</lineContent>
    <details>
      found   : @Initialized @Nullable AbstractFrame
      required: @Initialized @NonNull AbstractFrame
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter frame of RequireThisCheck.findFrame.</message>
    <lineContent>return findFrame(current.peek(), name, lookForMethod);</lineContent>
    <details>
      found   : @Initialized @Nullable AbstractFrame
      required: @Initialized @NonNull AbstractFrame
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter ident of ClassFrame constructor.</message>
    <lineContent>super(parent, null);</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter parent of AnonymousClassFrame constructor.</message>
    <lineContent>frameStack.addFirst(new AnonymousClassFrame(frame,</lineContent>
    <details>
      found   : @Initialized @Nullable AbstractFrame
      required: @Initialized @NonNull AbstractFrame
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter parent of BlockFrame constructor.</message>
    <lineContent>frameStack.addFirst(new BlockFrame(frame, ast));</lineContent>
    <details>
      found   : @Initialized @Nullable AbstractFrame
      required: @Initialized @NonNull AbstractFrame
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter parent of CatchFrame constructor.</message>
    <lineContent>final AbstractFrame catchFrame = new CatchFrame(frame, ast);</lineContent>
    <details>
      found   : @Initialized @Nullable AbstractFrame
      required: @Initialized @NonNull AbstractFrame
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter parent of ClassFrame constructor.</message>
    <lineContent>frameStack.addFirst(new ClassFrame(frame, classFrameNameIdent));</lineContent>
    <details>
      found   : @Initialized @Nullable AbstractFrame
      required: @Initialized @NonNull AbstractFrame
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter parent of ConstructorFrame constructor.</message>
    <lineContent>frameStack.addFirst(new ConstructorFrame(frame, ctorFrameNameIdent));</lineContent>
    <details>
      found   : @Initialized @Nullable AbstractFrame
      required: @Initialized @NonNull AbstractFrame
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter parent of ForFrame constructor.</message>
    <lineContent>final AbstractFrame forFrame = new ForFrame(frame, ast);</lineContent>
    <details>
      found   : @Initialized @Nullable AbstractFrame
      required: @Initialized @NonNull AbstractFrame
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter parent of TryWithResourcesFrame constructor.</message>
    <lineContent>frameStack.addFirst(new TryWithResourcesFrame(frame, ast));</lineContent>
    <details>
      found   : @Initialized @Nullable AbstractFrame
      required: @Initialized @NonNull AbstractFrame
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference ((ClassFrame)frame)</message>
    <lineContent>((ClassFrame) frame).addInstanceMember(componentIdent);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference ((ClassFrame)frame)</message>
    <lineContent>((ClassFrame) frame).addStaticMember(ident);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference current.peek()</message>
    <lineContent>if (current.peek().getType() == FrameType.TRY_WITH_RESOURCES_FRAME) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference frame</message>
    <lineContent>frame.addIdent(parameterIdent);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference frame</message>
    <lineContent>frame.addIdent(resourceIdent);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference frame</message>
    <lineContent>while (frame.getType() != FrameType.CLASS_FRAME) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field frames</message>
    <lineContent>private Map&lt;DetailAST, AbstractFrame&gt; frames;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return frame;</lineContent>
    <details>
      type of expression: @Initialized @Nullable AbstractFrame
      method return type: @Initialized @NonNull AbstractFrame
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return frame;</lineContent>
    <details>
      type of expression: @Initialized @Nullable AbstractFrame
      method return type: @Initialized @NonNull AbstractFrame
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return frameWhereViolationIsFound;</lineContent>
    <details>
      type of expression: @Initialized @Nullable AbstractFrame
      method return type: @Initialized @NonNull AbstractFrame
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return result;</lineContent>
    <details>
      type of expression: @Initialized @Nullable AbstractFrame
      method return type: @Initialized @NonNull AbstractFrame
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/RequireThisCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return blockEndToken;</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailAST
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/ReturnCountCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field context</message>
    <lineContent>private Context context;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/ReturnCountCheck.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: maxAllowed</message>
    <lineContent>private Context(boolean checking) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/UnnecessaryParenthesesCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field parentToSkip</message>
    <lineContent>private DetailAST parentToSkip;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/UnnecessaryParenthesesCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>if (parentToSkip != ast &amp;&amp; isExprSurrounded(ast)) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/UnnecessaryParenthesesCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>if (parentToSkip != ast &amp;&amp; isExprSurrounded(ast)) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/UnusedLocalVariableCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter arg1 of Map.put.</message>
    <lineContent>anonInnerAstToTypeDeclDesc.put(literalNewAst, typeDeclarations.peek());</lineContent>
    <details>
      found   : @Initialized @Nullable TypeDeclDesc
      required: @Initialized @NonNull TypeDeclDesc
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/UnusedLocalVariableCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter outerClassQualifiedName of CheckUtil.getQualifiedTypeDeclarationName.</message>
    <lineContent>.getQualifiedTypeDeclarationName(packageName, outerClassQualifiedName, className);</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/UnusedLocalVariableCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter scope of VariableDesc constructor.</message>
    <lineContent>this(name, null, null);</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/UnusedLocalVariableCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter typeAst of VariableDesc constructor.</message>
    <lineContent>this(name, null, null);</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/UnusedLocalVariableCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter typeAst of VariableDesc constructor.</message>
    <lineContent>this(name, null, scope);</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/UnusedLocalVariableCheck.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>packageName = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/UnusedLocalVariableCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference anonInnerAstToTypeDeclDesc.get(literalNewAst)</message>
    <lineContent>anonInnerAstToTypeDeclDesc.get(literalNewAst).getQualifiedName(),</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/UnusedLocalVariableCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference typeDeclAstToTypeDeclDesc.get(obtainedClass.getTypeDeclAst())</message>
    <lineContent>.get(obtainedClass.getTypeDeclAst())</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/UnusedLocalVariableCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference typeDeclAstToTypeDeclDesc.get(parentAst.getParent())</message>
    <lineContent>typeDeclAstToTypeDeclDesc.get(parentAst.getParent()).addInstOrClassVar(desc);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/UnusedLocalVariableCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference typeDeclarations.peek()</message>
    <lineContent>outerClassQualifiedName = typeDeclarations.peek().getQualifiedName();</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/UnusedLocalVariableCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference variablesStack.peek()</message>
    <lineContent>while (!variablesStack.isEmpty() &amp;&amp; variablesStack.peek().getScope() == scopeAst) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/UnusedLocalVariableCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field packageName</message>
    <lineContent>private String packageName;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/UnusedLocalVariableCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>&amp;&amp; identAst != parent.getLastChild();</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/UnusedLocalVariableCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>&amp;&amp; identAst != parent.getLastChild();</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/UnusedLocalVariableCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>&amp;&amp; parent.getFirstChild() != identAst;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/UnusedLocalVariableCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>&amp;&amp; parent.getFirstChild() != identAst;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/UnusedLocalVariableCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>while (!variablesStack.isEmpty() &amp;&amp; variablesStack.peek().getScope() == scopeAst) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/UnusedLocalVariableCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>while (!variablesStack.isEmpty() &amp;&amp; variablesStack.peek().getScope() == scopeAst) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/UnusedLocalVariableCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>while (currNode != ast &amp;&amp; toVisit == null) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/UnusedLocalVariableCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>while (currNode != ast &amp;&amp; toVisit == null) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/UnusedLocalVariableCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return result;</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailAST
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/UnusedLocalVariableCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return obtainedClass;</lineContent>
    <details>
      type of expression: @Initialized @Nullable TypeDeclDesc
      method return type: @Initialized @NonNull TypeDeclDesc
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/VariableDeclarationUsageDistanceCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter key of SimpleEntry constructor.</message>
    <lineContent>return new SimpleEntry&lt;&gt;(variableUsageAst, dist);</lineContent>
    <details>
      found   : @Initialized @Nullable DetailAST
      required: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/VariableDeclarationUsageDistanceCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter key of SimpleEntry constructor.</message>
    <lineContent>return new SimpleEntry&lt;&gt;(variableUsageAst, dist);</lineContent>
    <details>
      found   : @Initialized @Nullable DetailAST
      required: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/VariableDeclarationUsageDistanceCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>if (curNode == parent) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/VariableDeclarationUsageDistanceCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>if (curNode == parent) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/VariableDeclarationUsageDistanceCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return firstNodeInsideBlock;</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailAST
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/VariableDeclarationUsageDistanceCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return firstNodeInsideBlock;</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailAST
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/VariableDeclarationUsageDistanceCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return firstNodeInsideBlock;</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailAST
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/VariableDeclarationUsageDistanceCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return variableUsageNode;</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailAST
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/design/DesignForExtensionCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>if (curNode == token) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/design/DesignForExtensionCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>if (curNode == token) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/design/DesignForExtensionCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>return currentNode != methodImplCloseBrace</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/design/DesignForExtensionCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>return currentNode != methodImplCloseBrace</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/design/FinalClassCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter outerClassQualifiedName of CheckUtil.getQualifiedTypeDeclarationName.</message>
    <lineContent>outerTypeDeclarationQualifiedName,</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/design/FinalClassCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference typeDeclarations.peek()</message>
    <lineContent>.put(ast, typeDeclarations.peek().getQualifiedName());</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/design/FinalClassCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference typeDeclarations.peek()</message>
    <lineContent>outerTypeDeclarationQualifiedName = typeDeclarations.peek().getQualifiedName();</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/design/FinalClassCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field anonInnerClassToOuterTypeDecl</message>
    <lineContent>private Map&lt;DetailAST, String&gt; anonInnerClassToOuterTypeDecl;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/design/FinalClassCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field innerClasses</message>
    <lineContent>private Map&lt;String, ClassDesc&gt; innerClasses;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/design/FinalClassCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field packageName</message>
    <lineContent>private String packageName;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/design/FinalClassCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field typeDeclarations</message>
    <lineContent>private Deque&lt;TypeDeclarationDescription&gt; typeDeclarations;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/design/FinalClassCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return superClassName;</lineContent>
    <details>
      type of expression: @Initialized @Nullable String
      method return type: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/design/OneTopLevelClassCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter typeDef of OneTopLevelClassCheck.isPublic.</message>
    <lineContent>if (publicTypeFound &amp;&amp; !isPublic(firstType)) {</lineContent>
    <details>
      found   : @Initialized @Nullable DetailAST
      required: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/design/VisibilityModifierCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field ignoreAnnotationShortNames</message>
    <lineContent>private Set&lt;String&gt; ignoreAnnotationShortNames;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/design/VisibilityModifierCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field immutableClassShortNames</message>
    <lineContent>private Set&lt;String&gt; immutableClassShortNames;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/design/VisibilityModifierCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return matchingAnnotation;</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailAST
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/header/AbstractHeaderCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field charset</message>
    <lineContent>private Charset charset;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/header/AbstractHeaderCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field headerFile</message>
    <lineContent>private URI headerFile;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/CustomImportOrderCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter previousImport of CustomImportOrderCheck.isAlphabeticalOrderBroken.</message>
    <lineContent>if (isAlphabeticalOrderBroken(previousImportFromCurrentGroup, fullImportIdent)) {</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/CustomImportOrderCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter previousImport of CustomImportOrderCheck.validateExtraEmptyLine.</message>
    <lineContent>validateExtraEmptyLine(previousImportObjectFromCurrentGroup,</lineContent>
    <details>
      found   : @Initialized @Nullable ImportDetails
      required: @Initialized @NonNull ImportDetails
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/CustomImportOrderCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter previousImport of CustomImportOrderCheck.validateMissedEmptyLine.</message>
    <lineContent>validateMissedEmptyLine(previousImportObjectFromCurrentGroup,</lineContent>
    <details>
      found   : @Initialized @Nullable ImportDetails
      required: @Initialized @NonNull ImportDetails
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/FileImportControl.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return finestMatch;</lineContent>
    <details>
      type of expression: @Initialized @Nullable AbstractImportControl
      method return type: @Initialized @NonNull AbstractImportControl
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/IllegalImportCheck.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: illegalPkgs, illegalClasses</message>
    <lineContent>public IllegalImportCheck() {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/IllegalImportCheck.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to setIllegalPkgs(java.lang.String...) not allowed on the given receiver.</message>
    <lineContent>setIllegalPkgs(&quot;sun&quot;);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.api.AbstractCheck.class) @NonNull IllegalImportCheck
      required: @Initialized @NonNull IllegalImportCheck
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/ImportControlCheck.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>currentImportControl = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull AbstractImportControl
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/ImportControlCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field currentImportControl</message>
    <lineContent>private AbstractImportControl currentImportControl;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/ImportControlCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field file</message>
    <lineContent>private URI file;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/ImportControlCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field fileName</message>
    <lineContent>private String fileName;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/ImportControlCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field packageName</message>
    <lineContent>private String packageName;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/ImportControlCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field root</message>
    <lineContent>private PkgImportControl root;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/ImportControlLoader.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter parent of FileImportControl constructor.</message>
    <lineContent>final AbstractImportControl importControl = new FileImportControl(parentImportControl,</lineContent>
    <details>
      found   : @Initialized @Nullable PkgImportControl
      required: @Initialized @NonNull PkgImportControl
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/ImportControlLoader.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter parent of PkgImportControl constructor.</message>
    <lineContent>final AbstractImportControl importControl = new PkgImportControl(parentImportControl,</lineContent>
    <details>
      found   : @Initialized @Nullable PkgImportControl
      required: @Initialized @NonNull PkgImportControl
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/ImportControlLoader.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference parentImportControl</message>
    <lineContent>parentImportControl.addChild(importControl);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/ImportControlLoader.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference parentImportControl</message>
    <lineContent>parentImportControl.addChild(importControl);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/ImportControlLoader.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference stack.peek()</message>
    <lineContent>stack.peek().addImportRule(rule);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/ImportControlLoader.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return (PkgImportControl) stack.peek();</lineContent>
    <details>
      type of expression: @Initialized @Nullable PkgImportControl
      method return type: @Initialized @NonNull PkgImportControl
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/ImportOrderCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field lastImport</message>
    <lineContent>private String lastImport;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/PkgImportControl.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter parent of AbstractImportControl constructor.</message>
    <lineContent>super(null, strategyOnMismatch);</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull AbstractImportControl
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/PkgImportControl.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>patternForExactMatch = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull Pattern
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/PkgImportControl.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>patternForExactMatch = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull Pattern
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/PkgImportControl.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>patternForPartialMatch = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull Pattern
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/PkgImportControl.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>patternForPartialMatch = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull Pattern
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/PkgImportControl.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return finestMatch;</lineContent>
    <details>
      type of expression: @Initialized @Nullable AbstractImportControl
      method return type: @Initialized @NonNull AbstractImportControl
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/RedundantImportCheck.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>pkgName = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/RedundantImportCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field pkgName</message>
    <lineContent>private String pkgName;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/UnusedImportsCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter parent of Frame constructor.</message>
    <lineContent>return new Frame(null);</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull Frame
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/UnusedImportsCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter type of UnusedImportsCheck.topLevelType.</message>
    <lineContent>references.add(topLevelType(matcher.group(1)));</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/imports/UnusedImportsCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field currentFrame</message>
    <lineContent>private Frame currentFrame;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/AbstractExpressionHandler.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: indent</message>
    <lineContent>protected AbstractExpressionHandler(IndentationCheck indentCheck, String typeName,</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/AbstractExpressionHandler.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>while (curNode != ast &amp;&amp; toVisit == null) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/AbstractExpressionHandler.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>while (curNode != ast &amp;&amp; toVisit == null) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/AnnotationArrayInitHandler.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return null;</lineContent>
    <details>
      type of expression: null (NullType)
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/ArrayInitHandler.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return null;</lineContent>
    <details>
      type of expression: null (NullType)
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/BlockParentHandler.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>if (nonList != nonListStartAst) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/BlockParentHandler.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>if (nonList != nonListStartAst) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/ClassDefHandler.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return null;</lineContent>
    <details>
      type of expression: null (NullType)
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/CommentsIndentationCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>while (nextToken != null &amp;&amp; nextToken != currentStatement &amp;&amp; isComment(nextToken)) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/CommentsIndentationCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>while (nextToken != null &amp;&amp; nextToken != currentStatement &amp;&amp; isComment(nextToken)) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/CommentsIndentationCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return prevCaseToken;</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailAST
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/CommentsIndentationCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return prevStmt;</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailAST
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/CommentsIndentationCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return previousStatement;</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailAST
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/CommentsIndentationCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return previousStatement;</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailAST
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/DetailAstSet.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return astLines.get(lineNum);</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailAST
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/DetailAstSet.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return startColumn;</lineContent>
    <details>
      type of expression: @Initialized @Nullable Integer
      method return type: @Initialized @NonNull Integer
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter constructor of CommonUtil.invokeConstructor.</message>
    <lineContent>handlerCtor, indentCheck, ast, parent);</lineContent>
    <details>
      found   : @Initialized @Nullable Constructor&lt;capture extends @Initialized @Nullable Object&gt;
      required: @Initialized @NonNull Constructor&lt;capture extends @Initialized @Nullable Object&gt;
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.ANNOTATION_ARRAY_INIT, AnnotationArrayInitHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.ANNOTATION_DEF, ClassDefHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.ANNOTATION_FIELD_DEF, MethodDefHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.ARRAY_INIT, ArrayInitHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.CASE_GROUP, CaseHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.CLASS_DEF, ClassDefHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.COMPACT_CTOR_DEF, MethodDefHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.CTOR_CALL, MethodCallHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.CTOR_DEF, MethodDefHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.ENUM_DEF, ClassDefHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.IMPORT, ImportHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.INDEX_OP, IndexHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.INSTANCE_INIT, SlistHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.INTERFACE_DEF, ClassDefHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.LABELED_STAT, LabelHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.LAMBDA, LambdaHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.LITERAL_CATCH, CatchHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.LITERAL_DO, DoWhileHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.LITERAL_ELSE, ElseHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.LITERAL_FINALLY, FinallyHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.LITERAL_FOR, ForHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.LITERAL_IF, IfHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.LITERAL_NEW, NewHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.LITERAL_SWITCH, SwitchHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.LITERAL_SYNCHRONIZED, SynchronizedHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.LITERAL_TRY, TryHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.LITERAL_WHILE, WhileHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.LITERAL_YIELD, YieldHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.METHOD_CALL, MethodCallHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.METHOD_DEF, MethodDefHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.OBJBLOCK, ObjectBlockHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.PACKAGE_DEF, PackageDefHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.RECORD_DEF, ClassDefHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.SLIST, SlistHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.STATIC_INIT, StaticInitHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.SUPER_CTOR_CALL, MethodCallHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.SWITCH_RULE, SwitchRuleHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to &lt;T&gt;register(int,java.lang.Class&lt;T&gt;) not allowed on the given receiver.</message>
    <lineContent>register(TokenTypes.VARIABLE_DEF, MemberDefHandler.class);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.HandlerFactory.class) @NonNull HandlerFactory
      required: @Initialized @NonNull HandlerFactory
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return resultHandler;</lineContent>
    <details>
      type of expression: @Initialized @Nullable AbstractExpressionHandler
      method return type: @Initialized @NonNull AbstractExpressionHandler
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/HandlerFactory.java</fileName>
    <specifier>type.argument</specifier>
    <message>incompatible type argument for type parameter T extends Object of CommonUtil.invokeConstructor.</message>
    <lineContent>resultHandler = (AbstractExpressionHandler) CommonUtil.invokeConstructor(</lineContent>
    <details>
      found   : capture[ extends @UnknownKeyFor Object super @KeyForBottom Void]
      required: [extends @UnknownKeyFor Object super @UnknownKeyFor NullType]
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/IndentationCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter instance of LineWrappingHandler constructor.</message>
    <lineContent>private final LineWrappingHandler lineWrappingHandler = new LineWrappingHandler(this);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.api.AbstractCheck.class) @NonNull IndentationCheck
      required: @Initialized @NonNull IndentationCheck
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/IndentationCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter parent of HandlerFactory.getHandler.</message>
    <lineContent>handlers.peek());</lineContent>
    <details>
      found   : @Initialized @Nullable AbstractExpressionHandler
      required: @Initialized @NonNull AbstractExpressionHandler
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/IndentationCheck.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>private final LineWrappingHandler lineWrappingHandler = new LineWrappingHandler(this);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.indentation.LineWrappingHandler.class) @NonNull LineWrappingHandler
      required: @Initialized @NonNull LineWrappingHandler
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/IndentationCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field incorrectIndentationLines</message>
    <lineContent>private Set&lt;Integer&gt; incorrectIndentationLines;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/LineWrappingHandler.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>while (curNode != lastNode) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/LineWrappingHandler.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>while (curNode != lastNode) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/MemberDefHandler.java</fileName>
    <specifier>introduce.eliminate</specifier>
    <message>It is bad style to create an Optional just to chain methods to get a non-optional value.</message>
    <lineContent>.orElse(assign);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/MethodDefHandler.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return null;</lineContent>
    <details>
      type of expression: null (NullType)
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/ObjectBlockHandler.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return null;</lineContent>
    <details>
      type of expression: null (NullType)
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/PrimordialHandler.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter expr of AbstractExpressionHandler constructor.</message>
    <lineContent>super(indentCheck, null, null, null);</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/PrimordialHandler.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter parent of AbstractExpressionHandler constructor.</message>
    <lineContent>super(indentCheck, null, null, null);</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull AbstractExpressionHandler
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/PrimordialHandler.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter typeName of AbstractExpressionHandler constructor.</message>
    <lineContent>super(indentCheck, null, null, null);</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/SlistHandler.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return null;</lineContent>
    <details>
      type of expression: null (NullType)
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/SwitchHandler.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return null;</lineContent>
    <details>
      type of expression: null (NullType)
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/indentation/SwitchHandler.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return null;</lineContent>
    <details>
      type of expression: null (NullType)
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/AbstractJavadocCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field blockCommentAst</message>
    <lineContent>private DetailAST blockCommentAst;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/AbstractJavadocCheck.java</fileName>
    <specifier>type.argument</specifier>
    <message>incompatible type argument for type parameter T of ThreadLocal.</message>
    <lineContent>private final ThreadLocal&lt;FileContext&gt; context = ThreadLocal.withInitial(FileContext::new);</lineContent>
    <details>
      found   : @Initialized @NonNull FileContext
      required: [extends @Initialized @Nullable Object super null (NullType)]
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/AbstractJavadocCheck.java</fileName>
    <specifier>type.argument</specifier>
    <message>incompatible type argument for type parameter T of ThreadLocal.</message>
    <lineContent>private static final ThreadLocal&lt;Map&lt;LineColumn, ParseStatus&gt;&gt; TREE_CACHE =</lineContent>
    <details>
      found   : @Initialized @NonNull Map&lt;@Initialized @NonNull LineColumn, @Initialized @NonNull ParseStatus&gt;
      required: [extends @Initialized @Nullable Object super null (NullType)]
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocBlockTagLocationCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter arg0 of Set.contains.</message>
    <lineContent>if (tags.contains(tagName)) {</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull Object
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocBlockTagLocationCheck.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: tags</message>
    <lineContent>public JavadocBlockTagLocationCheck() {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocBlockTagLocationCheck.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to setTags(java.lang.String...) not allowed on the given receiver.</message>
    <lineContent>setTags(DEFAULT_TAGS);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.javadoc.AbstractJavadocCheck.class) @NonNull JavadocBlockTagLocationCheck
      required: @Initialized @NonNull JavadocBlockTagLocationCheck
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocMethodCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter firstArg of JavadocTag constructor.</message>
    <lineContent>javadocArgMatcher.group(2)));</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocMethodCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter firstArg of JavadocTag constructor.</message>
    <lineContent>javadocArgMissingDescriptionMatcher.group(2)));</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocMethodCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter tag of JavadocTag constructor.</message>
    <lineContent>javadocArgMissingDescriptionMatcher.group(1),</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocMethodCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter tag of JavadocTag constructor.</message>
    <lineContent>tags.add(new JavadocTag(currentLine, 0, noargCurlyMatcher.group(1)));</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocMethodCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter tag of JavadocTag constructor.</message>
    <lineContent>tags.add(new JavadocTag(currentLine, col, javadocArgMatcher.group(1),</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocMethodCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter tag of JavadocTag constructor.</message>
    <lineContent>tags.add(new JavadocTag(currentLine, col, javadocNoargMatcher.group(1)));</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocMethodCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter tag of JavadocTag constructor.</message>
    <lineContent>tags.add(new JavadocTag(tagLine, col, param1));</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocMethodCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>if (curNode != root) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocMethodCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>if (curNode != root) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocMethodCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>return ancestor != methodBodyAst;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocMethodCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>return ancestor != methodBodyAst;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocMethodCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>while (ancestor != methodBodyAst) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocMethodCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>while (ancestor != methodBodyAst) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocMethodCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>while (curNode != root &amp;&amp; curNode.getNextSibling() == null) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocMethodCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>while (curNode != root &amp;&amp; curNode.getNextSibling() == null) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocMethodCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>} while (curNode != root);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocMethodCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>} while (curNode != root);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocNodeImpl.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field children</message>
    <lineContent>private DetailNode[] children;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocNodeImpl.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field parent</message>
    <lineContent>private DetailNode parent;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocNodeImpl.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field text</message>
    <lineContent>private String text;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocNodeImpl.java</fileName>
    <specifier>introduce.eliminate</specifier>
    <message>It is bad style to create an Optional just to chain methods to get a non-optional value.</message>
    <lineContent>.orElse(EMPTY_DETAIL_NODE_ARRAY);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocPackageCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter arg0 of Set.add.</message>
    <lineContent>final boolean isDirChecked = !directoriesChecked.add(dir);</lineContent>
    <details>
      found   : @Initialized @Nullable File
      required: @Initialized @NonNull File
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocPackageCheck.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to setFileExtensions(java.lang.String...) not allowed on the given receiver.</message>
    <lineContent>setFileExtensions(&quot;java&quot;);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.javadoc.JavadocPackageCheck.class) @NonNull AbstractFileSetCheck
      required: @Initialized @NonNull AbstractFileSetCheck
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocStyleCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field excludeScope</message>
    <lineContent>private Scope excludeScope;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocTag.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter firstArg of JavadocTag constructor.</message>
    <lineContent>this(line, column, tag, null);</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocTypeCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference matchInAngleBrackets.group(1)</message>
    <lineContent>typeParamName = matchInAngleBrackets.group(1).trim();</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocTypeCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field authorFormat</message>
    <lineContent>private Pattern authorFormat;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocTypeCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field excludeScope</message>
    <lineContent>private Scope excludeScope;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocTypeCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field versionFormat</message>
    <lineContent>private Pattern versionFormat;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocVariableCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field excludeScope</message>
    <lineContent>private Scope excludeScope;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/JavadocVariableCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field ignoreNamePattern</message>
    <lineContent>private Pattern ignoreNamePattern;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/MissingJavadocMethodCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field excludeScope</message>
    <lineContent>private Scope excludeScope;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/MissingJavadocMethodCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field ignoreMethodNamesRegex</message>
    <lineContent>private Pattern ignoreMethodNamesRegex;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/MissingJavadocMethodCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>if (lcurly.getFirstChild() == rcurly) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/MissingJavadocMethodCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>if (lcurly.getFirstChild() == rcurly) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/MissingJavadocTypeCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field excludeScope</message>
    <lineContent>private Scope excludeScope;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/SummaryJavadocCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter javadocInlineTag of SummaryJavadocCheck.isInlineReturnTag.</message>
    <lineContent>else if (inlineTag.isPresent() &amp;&amp; isInlineReturnTag(inlineTagNode)) {</lineContent>
    <details>
      found   : @Initialized @Nullable DetailNode
      required: @Initialized @NonNull DetailNode
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/SummaryJavadocCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter javadocInlineTag of SummaryJavadocCheck.isSummaryTag.</message>
    <lineContent>&amp;&amp; isSummaryTag(inlineTagNode)</lineContent>
    <details>
      found   : @Initialized @Nullable DetailNode
      required: @Initialized @NonNull DetailNode
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/SummaryJavadocCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return result;</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailNode
      method return type: @Initialized @NonNull DetailNode
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/TagParser.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to parseTags(java.lang.String[],int) not allowed on the given receiver.</message>
    <lineContent>parseTags(text, lineNo);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.checks.javadoc.TagParser.class) @NonNull TagParser
      required: @Initialized @NonNull TagParser
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/WriteTagCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field tag</message>
    <lineContent>private String tag;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/WriteTagCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field tagFormat</message>
    <lineContent>private Pattern tagFormat;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/WriteTagCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field tagRegExp</message>
    <lineContent>private Pattern tagRegExp;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/utils/BlockTagUtil.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter name of TagInfo constructor.</message>
    <lineContent>tags.add(new TagInfo(tagName, tagValue, position));</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/utils/InlineTagUtil.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter name of TagInfo constructor.</message>
    <lineContent>tags.add(new TagInfo(tagName, tagValue, position));</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/javadoc/utils/InlineTagUtil.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter source of InlineTagUtil.removeLeadingJavaDoc.</message>
    <lineContent>matchedTagValue = removeLeadingJavaDoc(matchedTagValue);</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/metrics/AbstractClassCouplingCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter ast of ClassContext constructor.</message>
    <lineContent>classesContexts.push(new ClassContext(&quot;&quot;, null));</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/metrics/AbstractClassCouplingCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference classesContexts.peek()</message>
    <lineContent>classesContexts.peek().addReferencedClassName(type.getText());</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/metrics/AbstractClassCouplingCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference classesContexts.peek()</message>
    <lineContent>classesContexts.peek().visitLiteralNew(ast);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/metrics/AbstractClassCouplingCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference classesContexts.peek()</message>
    <lineContent>classesContexts.peek().visitLiteralThrows(ast);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/metrics/AbstractClassCouplingCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference classesContexts.peek()</message>
    <lineContent>classesContexts.peek().visitType(ast);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/metrics/AbstractClassCouplingCheck.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: packageName</message>
    <lineContent>protected AbstractClassCouplingCheck(int defaultMax) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/metrics/JavaNCSSCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field counters</message>
    <lineContent>private Deque&lt;Counter&gt; counters;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/metrics/NPathComplexityCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field currentRangeValue</message>
    <lineContent>private BigInteger currentRangeValue;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/modifier/ModifierOrderCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return offendingModifier;</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailAST
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/modifier/RedundantModifierCheck.java</fileName>
    <specifier>introduce.eliminate</specifier>
    <message>It is bad style to create an Optional just to chain methods to get a non-optional value.</message>
    <lineContent>.ifPresent(modifiers -&gt; {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/naming/AbbreviationAsWordInNameCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return result;</lineContent>
    <details>
      type of expression: @Initialized @Nullable String
      method return type: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/naming/AbbreviationAsWordInNameCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return result;</lineContent>
    <details>
      type of expression: @Initialized @Nullable String
      method return type: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/regexp/DetectorOptions.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>pattern = Optional.ofNullable(format).map(this::createPattern).orElse(null);</lineContent>
    <details>
      found   : @Initialized @Nullable Pattern
      required: @Initialized @NonNull Pattern
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/regexp/DetectorOptions.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: reporter, format, message, suppressor, pattern</message>
    <lineContent>private DetectorOptions() {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/regexp/DetectorOptions.java</fileName>
    <specifier>introduce.eliminate</specifier>
    <message>It is bad style to create an Optional just to chain methods to get a non-optional value.</message>
    <lineContent>message = Optional.ofNullable(message).orElse(&quot;&quot;);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/regexp/DetectorOptions.java</fileName>
    <specifier>introduce.eliminate</specifier>
    <message>It is bad style to create an Optional just to chain methods to get a non-optional value.</message>
    <lineContent>pattern = Optional.ofNullable(format).map(this::createPattern).orElse(null);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/regexp/DetectorOptions.java</fileName>
    <specifier>introduce.eliminate</specifier>
    <message>It is bad style to create an Optional just to chain methods to get a non-optional value.</message>
    <lineContent>suppressor = Optional.ofNullable(suppressor).orElse(NeverSuppress.INSTANCE);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/regexp/MultilineDetector.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: matcher, text</message>
    <lineContent>/* package */ MultilineDetector(DetectorOptions options) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/regexp/RegexpCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field matcher</message>
    <lineContent>private Matcher matcher;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/regexp/RegexpCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field message</message>
    <lineContent>private String message;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/regexp/RegexpMultilineCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field detector</message>
    <lineContent>private MultilineDetector detector;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/regexp/RegexpMultilineCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field message</message>
    <lineContent>private String message;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/regexp/RegexpOnFilenameCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field fileNamePattern</message>
    <lineContent>private Pattern fileNamePattern;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/regexp/RegexpOnFilenameCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field folderPattern</message>
    <lineContent>private Pattern folderPattern;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/regexp/RegexpOnFilenameCheck.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return file.getCanonicalFile().getParent();</lineContent>
    <details>
      type of expression: @Initialized @Nullable String
      method return type: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/regexp/RegexpSinglelineCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field detector</message>
    <lineContent>private SinglelineDetector detector;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/regexp/RegexpSinglelineCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field message</message>
    <lineContent>private String message;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/regexp/RegexpSinglelineJavaCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter val of Builder.suppressor.</message>
    <lineContent>.suppressor(suppressor)</lineContent>
    <details>
      found   : @Initialized @Nullable MatchSuppressor
      required: @Initialized @NonNull MatchSuppressor
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/regexp/RegexpSinglelineJavaCheck.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field message</message>
    <lineContent>private String message;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/sizes/ExecutableStatementCountCheck.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter ast of Context constructor.</message>
    <lineContent>context = new Context(null);</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/sizes/ExecutableStatementCountCheck.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: context</message>
    <lineContent>public ExecutableStatementCountCheck() {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/sizes/ExecutableStatementCountCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>if (parent == contextAST) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/sizes/ExecutableStatementCountCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>if (parent == contextAST) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/sizes/MethodCountCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference actualCounter</message>
    <lineContent>actualCounter.increment(scope);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/sizes/MethodCountCheck.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference counters.peek()</message>
    <lineContent>final DetailAST latestDefinition = counters.peek().getScopeDefinition();</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/sizes/MethodCountCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>result = latestDefinition == methodDef.getParent().getParent();</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/sizes/MethodCountCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>result = latestDefinition == methodDef.getParent().getParent();</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/whitespace/ParenPadCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>while (currentNode.getNextSibling() == null &amp;&amp; currentNode.getParent() != ast) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/whitespace/ParenPadCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>while (currentNode.getNextSibling() == null &amp;&amp; currentNode.getParent() != ast) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/whitespace/TypecastParenPadCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>&amp;&amp; ast.getParent().findFirstToken(TokenTypes.RPAREN) == ast) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/checks/whitespace/TypecastParenPadCheck.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>&amp;&amp; ast.getParent().findFirstToken(TokenTypes.RPAREN) == ast) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filefilters/BeforeExecutionExclusionFileFilter.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field fileNamePattern</message>
    <lineContent>private Pattern fileNamePattern;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/CsvFilterElement.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to addFilter(com.puppycrawl.tools.checkstyle.filters.IntFilterElement) not allowed on the given receiver.</message>
    <lineContent>addFilter(new IntMatchFilterElement(matchValue));</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.filters.CsvFilterElement.class) @NonNull CsvFilterElement
      required: @Initialized @NonNull CsvFilterElement
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/CsvFilterElement.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to addFilter(com.puppycrawl.tools.checkstyle.filters.IntFilterElement) not allowed on the given receiver.</message>
    <lineContent>addFilter(new IntRangeFilterElement(lowerBound, upperBound));</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.filters.CsvFilterElement.class) @NonNull CsvFilterElement
      required: @Initialized @NonNull CsvFilterElement
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/CsvFilterElement.java</fileName>
    <specifier>override.param</specifier>
    <message>Incompatible parameter type for object.</message>
    <lineContent>public boolean equals(Object object) {</lineContent>
    <details>
      found   : @Initialized @NonNull Object
      required: @Initialized @Nullable Object
      Consequence: method in @Initialized @NonNull CsvFilterElement
      @Initialized @NonNull boolean equals(@Initialized @NonNull CsvFilterElement this, @Initialized @NonNull Object p0)
      cannot override method in @Initialized @NonNull Object
      @Initialized @NonNull boolean equals(@Initialized @NonNull Object this, @Initialized @Nullable Object p0)
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/IntMatchFilterElement.java</fileName>
    <specifier>override.param</specifier>
    <message>Incompatible parameter type for object.</message>
    <lineContent>public final boolean equals(Object object) {</lineContent>
    <details>
      found   : @Initialized @NonNull Object
      required: @Initialized @Nullable Object
      Consequence: method in @Initialized @NonNull IntMatchFilterElement
      @Initialized @NonNull boolean equals(@Initialized @NonNull IntMatchFilterElement this, @Initialized @NonNull Object p0)
      cannot override method in @Initialized @NonNull Object
      @Initialized @NonNull boolean equals(@Initialized @NonNull Object this, @Initialized @Nullable Object p0)
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/IntRangeFilterElement.java</fileName>
    <specifier>override.param</specifier>
    <message>Incompatible parameter type for other.</message>
    <lineContent>public boolean equals(Object other) {</lineContent>
    <details>
      found   : @Initialized @NonNull Object
      required: @Initialized @Nullable Object
      Consequence: method in @Initialized @NonNull IntRangeFilterElement
      @Initialized @NonNull boolean equals(@Initialized @NonNull IntRangeFilterElement this, @Initialized @NonNull Object p0)
      cannot override method in @Initialized @NonNull Object
      @Initialized @NonNull boolean equals(@Initialized @NonNull Object this, @Initialized @Nullable Object p0)
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressFilterElement.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>columnFilter = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull CsvFilterElement
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressFilterElement.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>columnFilter = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull CsvFilterElement
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressFilterElement.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>lineFilter = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull CsvFilterElement
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressFilterElement.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>lineFilter = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull CsvFilterElement
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressFilterElement.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>checkRegexp = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull Pattern
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressFilterElement.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>fileRegexp = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull Pattern
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressFilterElement.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>messageRegexp = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull Pattern
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressFilterElement.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>columnsCsv = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressFilterElement.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>linesCsv = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressFilterElement.java</fileName>
    <specifier>override.param</specifier>
    <message>Incompatible parameter type for other.</message>
    <lineContent>public boolean equals(Object other) {</lineContent>
    <details>
      found   : @Initialized @NonNull Object
      required: @Initialized @Nullable Object
      Consequence: method in @Initialized @NonNull SuppressFilterElement
      @Initialized @NonNull boolean equals(@Initialized @NonNull SuppressFilterElement this, @Initialized @NonNull Object p0)
      cannot override method in @Initialized @NonNull Object
      @Initialized @NonNull boolean equals(@Initialized @NonNull Object this, @Initialized @Nullable Object p0)
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressFilterElement.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return result;</lineContent>
    <details>
      type of expression: @Initialized @Nullable String
      method return type: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressWithNearbyCommentFilter.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter text of SuppressWithNearbyCommentFilter.addTag.</message>
    <lineContent>addTag(matcher.group(0), line);</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressWithNearbyCommentFilter.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>tagIdRegexp = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull Pattern
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressWithNearbyCommentFilter.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>tagMessageRegexp = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull Pattern
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressWithNearbyCommentFilter.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field idFormat</message>
    <lineContent>private String idFormat;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressWithNearbyCommentFilter.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field messageFormat</message>
    <lineContent>private String messageFormat;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressWithNearbyCommentFilter.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>if (getFileContents() != currentContents) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressWithNearbyCommentFilter.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>if (getFileContents() != currentContents) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressWithNearbyCommentFilter.java</fileName>
    <specifier>override.param</specifier>
    <message>Incompatible parameter type for other.</message>
    <lineContent>public boolean equals(Object other) {</lineContent>
    <details>
      found   : @Initialized @NonNull Object
      required: @Initialized @Nullable Object
      Consequence: method in @Initialized @NonNull Tag
      @Initialized @NonNull boolean equals(@Initialized @NonNull Tag this, @Initialized @NonNull Object p0)
      cannot override method in @Initialized @NonNull Object
      @Initialized @NonNull boolean equals(@Initialized @NonNull Object this, @Initialized @Nullable Object p0)
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressWithNearbyCommentFilter.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return fileContentsReference.get();</lineContent>
    <details>
      type of expression: @Initialized @Nullable FileContents
      method return type: @Initialized @NonNull FileContents
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressWithNearbyTextFilter.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter text of Suppression constructor.</message>
    <lineContent>suppression = new Suppression(text, lineNo + 1, this);</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressWithNearbyTextFilter.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field idPattern</message>
    <lineContent>private String idPattern;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressWithNearbyTextFilter.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field messagePattern</message>
    <lineContent>private String messagePattern;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressWithNearbyTextFilter.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: eventMessageRegexp, eventIdRegexp</message>
    <lineContent>private Suppression(</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressWithNearbyTextFilter.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return result;</lineContent>
    <details>
      type of expression: @Initialized @Nullable FileText
      method return type: @Initialized @NonNull FileText
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressWithNearbyTextFilter.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return suppression;</lineContent>
    <details>
      type of expression: @Initialized @Nullable Suppression
      method return type: @Initialized @NonNull Suppression
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressWithPlainTextCommentFilter.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter text of Suppression constructor.</message>
    <lineContent>suppression = new Suppression(offCommentMatcher.group(0),</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressWithPlainTextCommentFilter.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter text of Suppression constructor.</message>
    <lineContent>suppression = new Suppression(onCommentMatcher.group(0),</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressWithPlainTextCommentFilter.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>eventIdRegexp = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull Pattern
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressWithPlainTextCommentFilter.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>eventMessageRegexp = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull Pattern
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressWithPlainTextCommentFilter.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field idFormat</message>
    <lineContent>private String idFormat;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressWithPlainTextCommentFilter.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field messageFormat</message>
    <lineContent>private String messageFormat;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressWithPlainTextCommentFilter.java</fileName>
    <specifier>override.param</specifier>
    <message>Incompatible parameter type for other.</message>
    <lineContent>public boolean equals(Object other) {</lineContent>
    <details>
      found   : @Initialized @NonNull Object
      required: @Initialized @Nullable Object
      Consequence: method in @Initialized @NonNull Suppression
      @Initialized @NonNull boolean equals(@Initialized @NonNull Suppression this, @Initialized @NonNull Object p0)
      cannot override method in @Initialized @NonNull Object
      @Initialized @NonNull boolean equals(@Initialized @NonNull Object this, @Initialized @Nullable Object p0)
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressWithPlainTextCommentFilter.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return result;</lineContent>
    <details>
      type of expression: @Initialized @Nullable FileText
      method return type: @Initialized @NonNull FileText
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressWithPlainTextCommentFilter.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>.orElse(null);</lineContent>
    <details>
      type of expression: @Initialized @Nullable Suppression
      method return type: @Initialized @NonNull Suppression
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionCommentFilter.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter text of SuppressionCommentFilter.addTag.</message>
    <lineContent>addTag(offMatcher.group(0), line, column, TagType.OFF);</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionCommentFilter.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter text of SuppressionCommentFilter.addTag.</message>
    <lineContent>addTag(onMatcher.group(0), line, column, TagType.ON);</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionCommentFilter.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>tagIdRegexp = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull Pattern
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionCommentFilter.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>tagMessageRegexp = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull Pattern
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionCommentFilter.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field idFormat</message>
    <lineContent>private String idFormat;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionCommentFilter.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field messageFormat</message>
    <lineContent>private String messageFormat;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionCommentFilter.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>if (getFileContents() != currentContents) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionCommentFilter.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>if (getFileContents() != currentContents) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionCommentFilter.java</fileName>
    <specifier>override.param</specifier>
    <message>Incompatible parameter type for other.</message>
    <lineContent>public boolean equals(Object other) {</lineContent>
    <details>
      found   : @Initialized @NonNull Object
      required: @Initialized @Nullable Object
      Consequence: method in @Initialized @NonNull Tag
      @Initialized @NonNull boolean equals(@Initialized @NonNull Tag this, @Initialized @NonNull Object p0)
      cannot override method in @Initialized @NonNull Object
      @Initialized @NonNull boolean equals(@Initialized @NonNull Object this, @Initialized @Nullable Object p0)
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionCommentFilter.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return fileContentsReference.get();</lineContent>
    <details>
      type of expression: @Initialized @Nullable FileContents
      method return type: @Initialized @NonNull FileContents
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionCommentFilter.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return result;</lineContent>
    <details>
      type of expression: @Initialized @Nullable Tag
      method return type: @Initialized @NonNull Tag
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionFilter.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field file</message>
    <lineContent>private String file;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionSingleFilter.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field checks</message>
    <lineContent>private Pattern checks;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionSingleFilter.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field columns</message>
    <lineContent>private String columns;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionSingleFilter.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field files</message>
    <lineContent>private Pattern files;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionSingleFilter.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field filter</message>
    <lineContent>private SuppressFilterElement filter;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionSingleFilter.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field id</message>
    <lineContent>private String id;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionSingleFilter.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field lines</message>
    <lineContent>private String lines;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionSingleFilter.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field message</message>
    <lineContent>private Pattern message;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionXpathFilter.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field file</message>
    <lineContent>private String file;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionXpathFilter.java</fileName>
    <specifier>override.param</specifier>
    <message>Incompatible parameter type for obj.</message>
    <lineContent>public boolean equals(Object obj) {</lineContent>
    <details>
      found   : @Initialized @NonNull Object
      required: @Initialized @Nullable Object
      Consequence: method in @Initialized @NonNull SuppressionXpathFilter
      @Initialized @NonNull boolean equals(@Initialized @NonNull SuppressionXpathFilter this, @Initialized @NonNull Object p0)
      cannot override method in @Initialized @NonNull Object
      @Initialized @NonNull boolean equals(@Initialized @NonNull Object this, @Initialized @Nullable Object p0)
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionXpathSingleFilter.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>this.checks = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull Pattern
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionXpathSingleFilter.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>this.files = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull Pattern
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionXpathSingleFilter.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>this.message = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull Pattern
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionXpathSingleFilter.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field checks</message>
    <lineContent>private Pattern checks;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionXpathSingleFilter.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field files</message>
    <lineContent>private Pattern files;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionXpathSingleFilter.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field id</message>
    <lineContent>private String id;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionXpathSingleFilter.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field message</message>
    <lineContent>private Pattern message;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionXpathSingleFilter.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field query</message>
    <lineContent>private String query;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/SuppressionXpathSingleFilter.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field xpathFilter</message>
    <lineContent>private XpathFilterElement xpathFilter;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/XpathFilterElement.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter checks of XpathFilterElement constructor.</message>
    <lineContent>Optional.ofNullable(checks).map(CommonUtil::createPattern).orElse(null),</lineContent>
    <details>
      found   : @Initialized @Nullable Pattern
      required: @Initialized @NonNull Pattern
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/XpathFilterElement.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter contextItem of XPathExpression.createDynamicContext.</message>
    <lineContent>xpathExpression.createDynamicContext(rootNode);</lineContent>
    <details>
      found   : @Initialized @Nullable RootNode
      required: @Initialized @NonNull Item
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/XpathFilterElement.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter files of XpathFilterElement constructor.</message>
    <lineContent>this(Optional.ofNullable(files).map(Pattern::compile).orElse(null),</lineContent>
    <details>
      found   : @Initialized @Nullable Pattern
      required: @Initialized @NonNull Pattern
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/XpathFilterElement.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter message of XpathFilterElement constructor.</message>
    <lineContent>Optional.ofNullable(message).map(Pattern::compile).orElse(null),</lineContent>
    <details>
      found   : @Initialized @Nullable Pattern
      required: @Initialized @NonNull Pattern
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/XpathFilterElement.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>xpathExpression = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull XPathExpression
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/XpathFilterElement.java</fileName>
    <specifier>introduce.eliminate</specifier>
    <message>It is bad style to create an Optional just to chain methods to get a non-optional value.</message>
    <lineContent>Optional.ofNullable(checks).map(CommonUtil::createPattern).orElse(null),</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/XpathFilterElement.java</fileName>
    <specifier>introduce.eliminate</specifier>
    <message>It is bad style to create an Optional just to chain methods to get a non-optional value.</message>
    <lineContent>Optional.ofNullable(message).map(Pattern::compile).orElse(null),</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/XpathFilterElement.java</fileName>
    <specifier>introduce.eliminate</specifier>
    <message>It is bad style to create an Optional just to chain methods to get a non-optional value.</message>
    <lineContent>this(Optional.ofNullable(files).map(Pattern::compile).orElse(null),</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/XpathFilterElement.java</fileName>
    <specifier>override.param</specifier>
    <message>Incompatible parameter type for other.</message>
    <lineContent>public boolean equals(Object other) {</lineContent>
    <details>
      found   : @Initialized @NonNull Object
      required: @Initialized @Nullable Object
      Consequence: method in @Initialized @NonNull XpathFilterElement
      @Initialized @NonNull boolean equals(@Initialized @NonNull XpathFilterElement this, @Initialized @NonNull Object p0)
      cannot override method in @Initialized @NonNull Object
      @Initialized @NonNull boolean equals(@Initialized @NonNull Object this, @Initialized @Nullable Object p0)
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/filters/XpathFilterElement.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return result;</lineContent>
    <details>
      type of expression: @Initialized @Nullable String
      method return type: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/BaseCellEditor.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return null;</lineContent>
    <details>
      type of expression: null (NullType)
      method return type: @Initialized @NonNull Object
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/ListToTreeSelectionModelWrapper.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to getListSelectionModel() not allowed on the given receiver.</message>
    <lineContent>getListSelectionModel().addListSelectionListener(event -&gt; {</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.gui.ListToTreeSelectionModelWrapper.class) @NonNull ListToTreeSelectionModelWrapper
      required: @Initialized @NonNull ListToTreeSelectionModelWrapper
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/ListToTreeSelectionModelWrapper.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to updateSelectedPathsFromSelectedRows() not allowed on the given receiver.</message>
    <lineContent>updateSelectedPathsFromSelectedRows();</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.gui.ListToTreeSelectionModelWrapper.class) @NonNull ListToTreeSelectionModelWrapper
      required: @Initialized @NonNull ListToTreeSelectionModelWrapper
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/MainFrame.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter arg0 of Toolkit.getImage.</message>
    <lineContent>setIconImage(Toolkit.getDefaultToolkit().getImage(MainFrame.class.getResource(ICON)));</lineContent>
    <details>
      found   : @Initialized @Nullable URL
      required: @Initialized @NonNull URL
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/MainFrame.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter event of ReloadAction.actionPerformed.</message>
    <lineContent>reloadAction.actionPerformed(null);</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull ActionEvent
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/MainFrame.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter sourceFile of MainFrame.openFile.</message>
    <lineContent>openFile(file);</lineContent>
    <details>
      found   : @Initialized @Nullable File
      required: @Initialized @NonNull File
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/MainFrame.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: textArea, xpathTextArea, treeTable</message>
    <lineContent>public MainFrame() {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/MainFrame.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to createContent() not allowed on the given receiver.</message>
    <lineContent>createContent();</lineContent>
    <details>
      found   : @UnderInitialization(javax.swing.JFrame.class) @NonNull MainFrame
      required: @Initialized @NonNull MainFrame
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/MainFrameModel.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter parseTree of ParseTreeTableModel constructor.</message>
    <lineContent>parseTreeTableModel = new ParseTreeTableModel(null);</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/MainFrameModel.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: currentFile, text</message>
    <lineContent>public MainFrameModel() {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/MainFrameModel.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return lastDirectory;</lineContent>
    <details>
      type of expression: @Initialized @Nullable File
      method return type: @Initialized @NonNull File
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/ParseTreeTableModel.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter childIndices of ParseTreeTableModel.fireTreeStructureChanged.</message>
    <lineContent>fireTreeStructureChanged(this, path, null, (Object[]) null);</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull int @Initialized @NonNull []
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/ParseTreeTableModel.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter children of ParseTreeTableModel.fireTreeStructureChanged.</message>
    <lineContent>fireTreeStructureChanged(this, path, null, (Object[]) null);</lineContent>
    <details>
      found   : @Initialized @NonNull Object @FBCBottom @Nullable []
      required: @Initialized @NonNull Object @Initialized @NonNull []
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/ParseTreeTableModel.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to setParseTree(com.puppycrawl.tools.checkstyle.api.DetailAST) not allowed on the given receiver.</message>
    <lineContent>setParseTree(parseTree);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.gui.ParseTreeTableModel.class) @NonNull ParseTreeTableModel
      required: @Initialized @NonNull ParseTreeTableModel
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/ParseTreeTablePresentation.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: parseMode</message>
    <lineContent>public ParseTreeTablePresentation(DetailAST parseTree) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/ParseTreeTablePresentation.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return value;</lineContent>
    <details>
      type of expression: @Initialized @Nullable Object
      method return type: @Initialized @NonNull Object
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/ParseTreeTablePresentation.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return value;</lineContent>
    <details>
      type of expression: @Initialized @Nullable Object
      method return type: @Initialized @NonNull Object
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/TreeTable.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter font of JComponent.getFontMetrics.</message>
    <lineContent>final FontMetrics fontMetrics = getFontMetrics(getFont());</lineContent>
    <details>
      found   : @Initialized @Nullable Font
      required: @Initialized @NonNull Font
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/TreeTable.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter jTreeTable of ListToTreeSelectionModelWrapper constructor.</message>
    <lineContent>ListToTreeSelectionModelWrapper(this);</lineContent>
    <details>
      found   : @UnderInitialization(javax.swing.JTable.class) @NonNull TreeTable
      required: @Initialized @NonNull TreeTable
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/TreeTable.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter selectionModel of JTree.setSelectionModel.</message>
    <lineContent>tree.setSelectionModel(selectionWrapper);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.gui.ListToTreeSelectionModelWrapper.class) @NonNull ListToTreeSelectionModelWrapper
      required: @Initialized @NonNull TreeSelectionModel
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/TreeTable.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter treeTable of TreeTableCellRenderer constructor.</message>
    <lineContent>tree = new TreeTableCellRenderer(this, treeTableModel);</lineContent>
    <details>
      found   : @UnderInitialization(javax.swing.JTable.class) @NonNull TreeTable
      required: @Initialized @NonNull TreeTable
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/TreeTable.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>tree = new TreeTableCellRenderer(this, treeTableModel);</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.gui.TreeTableCellRenderer.class) @NonNull TreeTableCellRenderer
      required: @Initialized @NonNull TreeTableCellRenderer
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/TreeTable.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: editor, xpathEditor, linePositionList</message>
    <lineContent>public TreeTable(ParseTreeTableModel treeTableModel) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/TreeTable.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to addMouseListener(java.awt.event.MouseListener) not allowed on the given receiver.</message>
    <lineContent>addMouseListener(new MouseAdapter() {</lineContent>
    <details>
      found   : @UnderInitialization(javax.swing.JTable.class) @NonNull Component
      required: @Initialized @NonNull Component
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/TreeTable.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to expandSelectedNode() not allowed on the given receiver.</message>
    <lineContent>expandSelectedNode();</lineContent>
    <details>
      found   : @UnderInitialization(javax.swing.JTable.class) @NonNull TreeTable
      required: @Initialized @NonNull TreeTable
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/TreeTable.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to expandSelectedNode() not allowed on the given receiver.</message>
    <lineContent>expandSelectedNode();</lineContent>
    <details>
      found   : @UnderInitialization(javax.swing.JTable.class) @NonNull TreeTable
      required: @Initialized @NonNull TreeTable
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/TreeTable.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to getActionMap() not allowed on the given receiver.</message>
    <lineContent>getActionMap().put(command, expand);</lineContent>
    <details>
      found   : @UnderInitialization(javax.swing.JTable.class) @NonNull JComponent
      required: @Initialized @NonNull JComponent
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/TreeTable.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to getInputMap() not allowed on the given receiver.</message>
    <lineContent>getInputMap().put(stroke, command);</lineContent>
    <details>
      found   : @UnderInitialization(javax.swing.JTable.class) @NonNull JComponent
      required: @Initialized @NonNull JComponent
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/TreeTable.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to getListSelectionModel() not allowed on the given receiver.</message>
    <lineContent>setSelectionModel(selectionWrapper.getListSelectionModel());</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.gui.ListToTreeSelectionModelWrapper.class) @NonNull ListToTreeSelectionModelWrapper
      required: @Initialized @NonNull ListToTreeSelectionModelWrapper
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/TreeTable.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to getRowHeight() not allowed on the given receiver.</message>
    <lineContent>final int height = getRowHeight();</lineContent>
    <details>
      found   : @UnderInitialization(javax.swing.JTable.class) @NonNull JTable
      required: @Initialized @NonNull JTable
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/TreeTable.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to setColumnsInitialWidth() not allowed on the given receiver.</message>
    <lineContent>setColumnsInitialWidth();</lineContent>
    <details>
      found   : @UnderInitialization(javax.swing.JTable.class) @NonNull TreeTable
      required: @Initialized @NonNull TreeTable
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/TreeTable.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to setDefaultEditor(java.lang.Class&lt;?&gt;,javax.swing.table.TableCellEditor) not allowed on the given receiver.</message>
    <lineContent>setDefaultEditor(ParseTreeTableModel.class, new TreeTableCellEditor());</lineContent>
    <details>
      found   : @UnderInitialization(javax.swing.JTable.class) @NonNull JTable
      required: @Initialized @NonNull JTable
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/TreeTable.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to setDefaultRenderer(java.lang.Class&lt;?&gt;,javax.swing.table.TableCellRenderer) not allowed on the given receiver.</message>
    <lineContent>setDefaultRenderer(ParseTreeTableModel.class, tree);</lineContent>
    <details>
      found   : @UnderInitialization(javax.swing.JTable.class) @NonNull JTable
      required: @Initialized @NonNull JTable
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/TreeTable.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to setIntercellSpacing(java.awt.Dimension) not allowed on the given receiver.</message>
    <lineContent>setIntercellSpacing(new Dimension(0, 0));</lineContent>
    <details>
      found   : @UnderInitialization(javax.swing.JTable.class) @NonNull JTable
      required: @Initialized @NonNull JTable
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/TreeTable.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to setModel(javax.swing.table.TableModel) not allowed on the given receiver.</message>
    <lineContent>setModel(new TreeTableModelAdapter(treeTableModel, tree));</lineContent>
    <details>
      found   : @UnderInitialization(javax.swing.JTable.class) @NonNull JTable
      required: @Initialized @NonNull JTable
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/TreeTable.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to setRowHeight(int) not allowed on the given receiver.</message>
    <lineContent>setRowHeight(height);</lineContent>
    <details>
      found   : @UnderInitialization(javax.swing.JTable.class) @NonNull TreeTable
      required: @Initialized @NonNull TreeTable
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/TreeTable.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to setSelectionModel(javax.swing.ListSelectionModel) not allowed on the given receiver.</message>
    <lineContent>setSelectionModel(selectionWrapper.getListSelectionModel());</lineContent>
    <details>
      found   : @UnderInitialization(javax.swing.JTable.class) @NonNull JTable
      required: @Initialized @NonNull JTable
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/gui/TreeTable.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to setShowGrid(boolean) not allowed on the given receiver.</message>
    <lineContent>setShowGrid(false);</lineContent>
    <details>
      found   : @UnderInitialization(javax.swing.JTable.class) @NonNull JTable
      required: @Initialized @NonNull JTable
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/JavadocMetadataScraper.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter arg0 of Set.add.</message>
    <lineContent>tokens.add(matcher.group(0));</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/JavadocMetadataScraper.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter nodeTag of JavadocMetadataScraper.getTextFromTag.</message>
    <lineContent>return getTextFromTag(tagNode);</lineContent>
    <details>
      found   : @Initialized @Nullable DetailNode
      required: @Initialized @NonNull DetailNode
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/JavadocMetadataScraper.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field moduleDetails</message>
    <lineContent>private ModuleDetails moduleDetails;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/JavadocMetadataScraper.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field rootNode</message>
    <lineContent>private DetailNode rootNode;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/JavadocMetadataScraper.java</fileName>
    <specifier>introduce.eliminate</specifier>
    <message>It is bad style to create an Optional just to chain methods to get a non-optional value.</message>
    <lineContent>return Optional.ofNullable(nodeTag).map(JavadocMetadataScraper::getText).orElse(&quot;&quot;);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/JavadocMetadataScraper.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>.orElse(null);</lineContent>
    <details>
      type of expression: @Initialized @Nullable String
      method return type: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/MetadataGeneratorUtil.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter moduleClassLoader of Checker.setModuleClassLoader.</message>
    <lineContent>checker.setModuleClassLoader(Checker.class.getClassLoader());</lineContent>
    <details>
      found   : @Initialized @Nullable ClassLoader
      required: @Initialized @NonNull ClassLoader
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/ModuleDetails.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field description</message>
    <lineContent>private String description;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/ModuleDetails.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field fullQualifiedName</message>
    <lineContent>private String fullQualifiedName;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/ModuleDetails.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field moduleType</message>
    <lineContent>private ModuleType moduleType;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/ModuleDetails.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field name</message>
    <lineContent>private String name;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/ModuleDetails.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field parent</message>
    <lineContent>private String parent;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/ModulePropertyDetails.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field defaultValue</message>
    <lineContent>private String defaultValue;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/ModulePropertyDetails.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field description</message>
    <lineContent>private String description;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/ModulePropertyDetails.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field name</message>
    <lineContent>private String name;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/ModulePropertyDetails.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field type</message>
    <lineContent>private String type;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/ModulePropertyDetails.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field validationType</message>
    <lineContent>private String validationType;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/XmlMetaReader.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter description of ModuleDetails.setDescription.</message>
    <lineContent>.getFirstChild().getNodeValue());</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/XmlMetaReader.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter description of ModulePropertyDetails.setDescription.</message>
    <lineContent>.get(0).getFirstChild().getNodeValue());</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/XmlMetaReader.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter element of XmlMetaReader.getAttributeValue.</message>
    <lineContent>listContent.add(getAttributeValue((Element) nodeList.item(j), attribute));</lineContent>
    <details>
      found   : @Initialized @Nullable Element
      required: @Initialized @NonNull Element
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/XmlMetaReader.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter element of XmlMetaReader.getAttributeValue.</message>
    <lineContent>propertyDetails.setName(getAttributeValue(prop, XML_TAG_NAME));</lineContent>
    <details>
      found   : @Initialized @Nullable Element
      required: @Initialized @NonNull Element
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/XmlMetaReader.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter moduleMetadataStream of XmlMetaReader.read.</message>
    <lineContent>moduleDetails = read(XmlMetaReader.class.getResourceAsStream(&quot;/&quot; + fileName),</lineContent>
    <details>
      found   : @Initialized @Nullable InputStream
      required: @Initialized @NonNull InputStream
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/XmlMetaReader.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference children.item(i)</message>
    <lineContent>if (children.item(i).getParentNode().equals(element)) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/XmlMetaReader.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference children.item(i).getParentNode()</message>
    <lineContent>if (children.item(i).getParentNode().equals(element)) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/XmlMetaReader.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference element.getAttributes()</message>
    <lineContent>return element.getAttributes().getNamedItem(attribute).getNodeValue();</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/XmlMetaReader.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference element.getAttributes().getNamedItem(attribute)</message>
    <lineContent>return element.getAttributes().getNamedItem(attribute).getNodeValue();</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/XmlMetaReader.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference getDirectChildsByTag(mod, XML_TAG_DESCRIPTION).get(0).getFirstChild()</message>
    <lineContent>.getFirstChild().getNodeValue());</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/XmlMetaReader.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference getDirectChildsByTag(prop, XML_TAG_DESCRIPTION).get(0).getFirstChild()</message>
    <lineContent>.get(0).getFirstChild().getNodeValue());</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/XmlMetaReader.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return result;</lineContent>
    <details>
      type of expression: @Initialized @Nullable List&lt;@Initialized @NonNull String&gt;
      method return type: @Initialized @NonNull List&lt;@Initialized @NonNull String&gt;
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/XmlMetaReader.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return result;</lineContent>
    <details>
      type of expression: @Initialized @Nullable ModuleDetails
      method return type: @Initialized @NonNull ModuleDetails
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/meta/XmlMetaReader.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return element.getAttributes().getNamedItem(attribute).getNodeValue();</lineContent>
    <details>
      type of expression: @Initialized @Nullable String
      method return type: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/site/PropertiesMacro.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter justification of XdocSink.tableRows.</message>
    <lineContent>sink.tableRows(null, false);</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull int @Initialized @NonNull []
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/site/PropertiesMacro.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter moduleJavadoc of PropertiesMacro.writePropertyRow.</message>
    <lineContent>writePropertyRow(sink, property, propertyJavadoc, instance, currentModuleJavadoc);</lineContent>
    <details>
      found   : @Initialized @Nullable DetailNode
      required: @Initialized @NonNull DetailNode
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/site/PropertiesMacro.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter propertyJavadoc of PropertiesMacro.writePropertyRow.</message>
    <lineContent>writePropertyRow(sink, property, propertyJavadoc, instance, currentModuleJavadoc);</lineContent>
    <details>
      found   : @Initialized @Nullable DetailNode
      required: @Initialized @NonNull DetailNode
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/site/SiteUtil.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter classLoader of PackageNamesLoader.getPackageNames.</message>
    <lineContent>final Set&lt;String&gt; packageNames = PackageNamesLoader.getPackageNames(cl);</lineContent>
    <details>
      found   : @Initialized @Nullable ClassLoader
      required: @Initialized @NonNull ClassLoader
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/site/SiteUtil.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter message of MacroExecutionException constructor.</message>
    <lineContent>throw new MacroExecutionException(exc.getMessage(), exc);</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/site/SiteUtil.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter moduleClassLoader of Checker.setModuleClassLoader.</message>
    <lineContent>checker.setModuleClassLoader(Checker.class.getClassLoader());</lineContent>
    <details>
      found   : @Initialized @Nullable ClassLoader
      required: @Initialized @NonNull ClassLoader
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/site/SiteUtil.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference currentClass</message>
    <lineContent>result = currentClass.getDeclaredField(propertyName);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/site/SiteUtil.java</fileName>
    <specifier>introduce.eliminate</specifier>
    <message>It is bad style to create an Optional just to chain methods to get a non-optional value.</message>
    <lineContent>.orElse(null);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/site/SiteUtil.java</fileName>
    <specifier>introduce.eliminate</specifier>
    <message>It is bad style to create an Optional just to chain methods to get a non-optional value.</message>
    <lineContent>.orElseGet(fieldClass::getSimpleName);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/site/SiteUtil.java</fileName>
    <specifier>methodref.return</specifier>
    <message>Incompatible return type</message>
    <lineContent>.mapToInt(int.class::cast);</lineContent>
    <details>
      found   : @Initialized @Nullable Integer
      required: @Initialized @NonNull int
      Consequence: method in @Initialized @NonNull Class&lt;@Initialized @NonNull Integer&gt;
      @Initialized @Nullable Integer cast(@Initialized @NonNull Class&lt;@Initialized @NonNull Integer&gt; this, @Initialized @Nullable Object p0)
      is not a valid method reference for method in @Initialized @NonNull ToIntFunction&lt;capture extends @Initialized @Nullable Object&gt;
      @Initialized @NonNull int applyAsInt(@Initialized @NonNull ToIntFunction&lt;capture extends @Initialized @Nullable Object&gt; this, capture extends @Initialized @Nullable Object p0)
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/site/SiteUtil.java</fileName>
    <specifier>methodref.return</specifier>
    <message>Incompatible return type</message>
    <lineContent>.map(Pattern.class::cast)</lineContent>
    <details>
      found   : @Initialized @Nullable Pattern
      required: @Initialized @NonNull Pattern
      Consequence: method in @Initialized @NonNull Class&lt;@Initialized @NonNull Pattern&gt;
      @Initialized @Nullable Pattern cast(@Initialized @NonNull Class&lt;@Initialized @NonNull Pattern&gt; this, @Initialized @Nullable Object p0)
      is not a valid method reference for method in @Initialized @NonNull Function&lt;capture extends @Initialized @Nullable Object, @Initialized @NonNull Pattern&gt;
      @Initialized @NonNull Pattern apply(@Initialized @NonNull Function&lt;capture extends @Initialized @Nullable Object, @Initialized @NonNull Pattern&gt; this, capture extends @Initialized @Nullable Object p0)
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/site/SiteUtil.java</fileName>
    <specifier>methodref.return</specifier>
    <message>Incompatible return type</message>
    <lineContent>.map(String.class::cast)</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
      Consequence: method in @Initialized @NonNull Class&lt;@Initialized @NonNull String&gt;
      @Initialized @Nullable String cast(@Initialized @NonNull Class&lt;@Initialized @NonNull String&gt; this, @Initialized @Nullable Object p0)
      is not a valid method reference for method in @Initialized @NonNull Function&lt;capture extends @Initialized @Nullable Object, @Initialized @NonNull String&gt;
      @Initialized @NonNull String apply(@Initialized @NonNull Function&lt;capture extends @Initialized @Nullable Object, @Initialized @NonNull String&gt; this, capture extends @Initialized @Nullable Object p0)
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/site/SiteUtil.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return result;</lineContent>
    <details>
      type of expression: @Initialized @Nullable Class&lt;capture extends @Initialized @Nullable Object&gt;
      method return type: @Initialized @NonNull Class&lt;? extends @Initialized @Nullable Object&gt;
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/site/SiteUtil.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return javadocTagWithSince;</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailNode
      method return type: @Initialized @NonNull DetailNode
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/site/SiteUtil.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return result;</lineContent>
    <details>
      type of expression: @Initialized @Nullable Field
      method return type: @Initialized @NonNull Field
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/site/SiteUtil.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return field.get(instance);</lineContent>
    <details>
      type of expression: @Initialized @Nullable Object
      method return type: @Initialized @NonNull Object
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/site/SiteUtil.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>.orElse(null);</lineContent>
    <details>
      type of expression: @Initialized @Nullable Path
      method return type: @Initialized @NonNull Path
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/site/SiteUtil.java</fileName>
    <specifier>unnecessary.equals</specifier>
    <message>use of .equals can be safely replaced by ==/!=</message>
    <lineContent>while (!Object.class.equals(currentClass)) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/site/ViolationMessagesMacro.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference clss.getPackage()</message>
    <lineContent>+ clss.getPackage().getName().replace(&quot;.&quot;, &quot;%2F&quot;)</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/site/XdocsTemplateParser.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter arg0 of XmlPullParser.getAttributeValue.</message>
    <lineContent>.getAttributeValue(null, Attribute.NAME.toString());</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/site/XdocsTemplateParser.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter arg0 of XmlPullParser.getAttributeValue.</message>
    <lineContent>.getAttributeValue(null, Attribute.VALUE.toString());</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/site/XdocsTemplateParser.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter arg0 of XmlPullParser.getAttributeValue.</message>
    <lineContent>macroName = parser.getAttributeValue(null, Attribute.NAME.toString());</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/site/XdocsTemplateParser.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>sourceContent = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/site/XdocsTemplateParser.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field macroName</message>
    <lineContent>private String macroName;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/site/XdocsTemplateParser.java</fileName>
    <specifier>initialization.field.uninitialized</specifier>
    <message>the default constructor does not initialize field sourceContent</message>
    <lineContent>private String sourceContent;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/utils/AnnotationUtil.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return result;</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailAST
      method return type: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/utils/ChainedPropertyUtil.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter input of Pattern.matcher.</message>
    <lineContent>final Matcher matcher = PROPERTY_VARIABLE_PATTERN.matcher(propertyValue);</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull CharSequence
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/utils/CheckUtil.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return returnValue;</lineContent>
    <details>
      type of expression: @Initialized @Nullable AccessModifierOption
      method return type: @Initialized @NonNull AccessModifierOption
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/utils/CommonUtil.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter replacement of String.replaceAll.</message>
    <lineContent>result = result.replaceAll(&quot;\\$&quot; + i, matcher.group(i));</lineContent>
    <details>
      found   : @Initialized @Nullable String
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/utils/CommonUtil.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return uri;</lineContent>
    <details>
      type of expression: @Initialized @Nullable URI
      method return type: @Initialized @NonNull URI
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/utils/CommonUtil.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return CommonUtil.class.getResource(name);</lineContent>
    <details>
      type of expression: @Initialized @Nullable URL
      method return type: @Initialized @NonNull URL
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/utils/JavadocUtil.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return nextSibling;</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailNode
      method return type: @Initialized @NonNull DetailNode
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/utils/JavadocUtil.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return previousSibling;</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailNode
      method return type: @Initialized @NonNull DetailNode
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/utils/JavadocUtil.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return resultNode;</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailNode
      method return type: @Initialized @NonNull DetailNode
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/utils/JavadocUtil.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return returnValue;</lineContent>
    <details>
      type of expression: @Initialized @Nullable DetailNode
      method return type: @Initialized @NonNull DetailNode
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/utils/ScopeUtil.java</fileName>
    <specifier>introduce.eliminate</specifier>
    <message>It is bad style to create an Optional just to chain methods to get a non-optional value.</message>
    <lineContent>.orElseGet(() -&gt; getDefaultScope(aMods));</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/utils/ScopeUtil.java</fileName>
    <specifier>introduce.eliminate</specifier>
    <message>It is bad style to create an Optional just to chain methods to get a non-optional value.</message>
    <lineContent>.orElseGet(() -&gt; getDefaultScope(ast));</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/utils/ScopeUtil.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return result;</lineContent>
    <details>
      type of expression: @Initialized @Nullable Scope
      method return type: @Initialized @NonNull Scope
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/utils/ScopeUtil.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return returnValue;</lineContent>
    <details>
      type of expression: @Initialized @Nullable Scope
      method return type: @Initialized @NonNull Scope
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/utils/TokenUtil.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter object of TokenUtil.getIntFromField.</message>
    <lineContent>Field::getName, fld -&gt; getIntFromField(fld, null))</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull Object
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/utils/UnmodifiableCollectionUtil.java</fileName>
    <specifier>methodref.return</specifier>
    <message>Incompatible return type</message>
    <lineContent>.map(elementType::cast)</lineContent>
    <details>
      found   : T[ extends @Initialized @Nullable Object super @Initialized @Nullable Void]
      required: T[ extends @Initialized @Nullable Object super @Initialized @NonNull Void]
      Consequence: method in @Initialized @NonNull Class&lt;T extends @Initialized @Nullable Object&gt;
      T extends @Initialized @Nullable Object cast(@Initialized @NonNull Class&lt;T extends @Initialized @Nullable Object&gt; this, @Initialized @Nullable Object p0)
      is not a valid method reference for method in @Initialized @NonNull Function&lt;S extends @Initialized @Nullable Object, T extends @Initialized @Nullable Object&gt;
      T extends @Initialized @Nullable Object apply(@Initialized @NonNull Function&lt;S extends @Initialized @Nullable Object, T extends @Initialized @Nullable Object&gt; this, S extends @Initialized @Nullable Object p0)
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/utils/UnmodifiableCollectionUtil.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return Arrays.copyOf(array, length);</lineContent>
    <details>
      type of expression: T[ extends @Initialized @Nullable Object super @Initialized @Nullable Void] @Initialized @NonNull []
      method return type: T[ extends @Initialized @Nullable Object super @Initialized @NonNull Void] @Initialized @NonNull []
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/AbstractElementNode.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter name of AttributeNode constructor.</message>
    <lineContent>private static final AttributeNode ATTRIBUTE_NODE_UNINITIALIZED = new AttributeNode(null, null);</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/AbstractElementNode.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter nodes of OfNodes constructor.</message>
    <lineContent>getChildren().toArray(EMPTY_ABSTRACT_NODE_ARRAY));</lineContent>
    <details>
      found   : @Initialized @Nullable AbstractNode @Initialized @NonNull []
      required: @Initialized @NonNull AbstractNode @Initialized @NonNull []
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/AbstractElementNode.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter nodes of OfNodes constructor.</message>
    <lineContent>getFollowingSiblings().toArray(EMPTY_ABSTRACT_NODE_ARRAY));</lineContent>
    <details>
      found   : @Initialized @Nullable AbstractNode @Initialized @NonNull []
      required: @Initialized @NonNull AbstractNode @Initialized @NonNull []
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/AbstractElementNode.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter value of AttributeNode constructor.</message>
    <lineContent>private static final AttributeNode ATTRIBUTE_NODE_UNINITIALIZED = new AttributeNode(null, null);</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/AbstractElementNode.java</fileName>
    <specifier>introduce.eliminate</specifier>
    <message>It is bad style to create an Optional just to chain methods to get a non-optional value.</message>
    <lineContent>.orElse(null);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/AbstractElementNode.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>if (attributeNode == ATTRIBUTE_NODE_UNINITIALIZED) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/AbstractElementNode.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>if (attributeNode == ATTRIBUTE_NODE_UNINITIALIZED) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/AbstractElementNode.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return result;</lineContent>
    <details>
      type of expression: @Initialized @Nullable String
      method return type: @Initialized @NonNull String
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/AbstractElementNode.java</fileName>
    <specifier>toarray.nullable.elements.not.newarray</specifier>
    <message>call of toArray on collection of non-null elements yields an array of possibly-null elements; omit the argument to toArray or make it an explicit array constructor</message>
    <lineContent>getChildren().toArray(EMPTY_ABSTRACT_NODE_ARRAY));</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/AbstractElementNode.java</fileName>
    <specifier>toarray.nullable.elements.not.newarray</specifier>
    <message>call of toArray on collection of non-null elements yields an array of possibly-null elements; omit the argument to toArray or make it an explicit array constructor</message>
    <lineContent>getFollowingSiblings().toArray(EMPTY_ABSTRACT_NODE_ARRAY));</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/AbstractNode.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: children</message>
    <lineContent>protected AbstractNode(TreeInfo treeInfo) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/AbstractNode.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>return this == nodeInfo;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/AbstractNode.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>return this == nodeInfo;</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/AbstractRootNode.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter nodes of OfNodes constructor.</message>
    <lineContent>getChildren().toArray(EMPTY_ABSTRACT_NODE_ARRAY));</lineContent>
    <details>
      found   : @Initialized @Nullable AbstractNode @Initialized @NonNull []
      required: @Initialized @NonNull AbstractNode @Initialized @NonNull []
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/AbstractRootNode.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return null;</lineContent>
    <details>
      type of expression: null (NullType)
      method return type: @Initialized @NonNull NodeInfo
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/AbstractRootNode.java</fileName>
    <specifier>toarray.nullable.elements.not.newarray</specifier>
    <message>call of toArray on collection of non-null elements yields an array of possibly-null elements; omit the argument to toArray or make it an explicit array constructor</message>
    <lineContent>getChildren().toArray(EMPTY_ABSTRACT_NODE_ARRAY));</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/AttributeNode.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter treeInfo of AbstractNode constructor.</message>
    <lineContent>super(null);</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull TreeInfo
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/ElementNode.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return result;</lineContent>
    <details>
      type of expression: @Initialized @Nullable AttributeNode
      method return type: @Initialized @NonNull AttributeNode
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/XpathQueryGenerator.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter root of XpathQueryGenerator.getXpathQuery.</message>
    <lineContent>final StringBuilder xpathQueryBuilder = new StringBuilder(getXpathQuery(null, ast));</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull DetailAST
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/XpathQueryGenerator.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>if (child != null &amp;&amp; child != ast) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/XpathQueryGenerator.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>if (child != null &amp;&amp; child != ast) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/XpathQueryGenerator.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>while (cur != root) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/XpathQueryGenerator.java</fileName>
    <specifier>not.interned</specifier>
    <message>attempting to use a non-@Interned comparison operand</message>
    <lineContent>while (cur != root) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/iterators/DescendantIterator.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>descendantEnum = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull AxisIterator
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/iterators/DescendantIterator.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference queue.poll()</message>
    <lineContent>descendantEnum = queue.poll().iterateAxis(AxisInfo.CHILD);</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/iterators/DescendantIterator.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: descendantEnum</message>
    <lineContent>public DescendantIterator(NodeInfo start, StartWith startWith) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/iterators/DescendantIterator.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return result;</lineContent>
    <details>
      type of expression: @Initialized @Nullable NodeInfo
      method return type: @Initialized @NonNull NodeInfo
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/iterators/FollowingIterator.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>siblingEnum = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull AxisIterator
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/iterators/FollowingIterator.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: descendantEnum</message>
    <lineContent>public FollowingIterator(NodeInfo start) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/iterators/FollowingIterator.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return result;</lineContent>
    <details>
      type of expression: @Initialized @Nullable NodeInfo
      method return type: @Initialized @NonNull NodeInfo
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/iterators/PrecedingIterator.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>previousSiblingEnum = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull AxisIterator
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/iterators/PrecedingIterator.java</fileName>
    <specifier>initialization.fields.uninitialized</specifier>
    <message>the constructor does not initialize fields: descendantEnum</message>
    <lineContent>public PrecedingIterator(NodeInfo start) {</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/iterators/ReverseDescendantIterator.java</fileName>
    <specifier>dereference.of.nullable</specifier>
    <message>dereference of possibly-null reference queue.poll()</message>
    <lineContent>pushToStack(queue.poll().iterateAxis(AxisInfo.CHILD));</lineContent>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/iterators/ReverseDescendantIterator.java</fileName>
    <specifier>method.invocation</specifier>
    <message>call to pushToStack(net.sf.saxon.tree.iter.AxisIterator) not allowed on the given receiver.</message>
    <lineContent>pushToStack(start.iterateAxis(AxisInfo.CHILD));</lineContent>
    <details>
      found   : @UnderInitialization(com.puppycrawl.tools.checkstyle.xpath.iterators.ReverseDescendantIterator.class) @NonNull ReverseDescendantIterator
      required: @Initialized @NonNull ReverseDescendantIterator
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/iterators/ReverseDescendantIterator.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return result;</lineContent>
    <details>
      type of expression: @Initialized @Nullable NodeInfo
      method return type: @Initialized @NonNull NodeInfo
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/iterators/ReverseListIterator.java</fileName>
    <specifier>argument</specifier>
    <message>incompatible argument for parameter c of ArrayList constructor.</message>
    <lineContent>this.items = new ArrayList&lt;&gt;(items);</lineContent>
    <details>
      found   : @UnknownKeyFor Collection&lt;capture[ extends @UnknownKeyFor NodeInfo super @KeyForBottom Void]&gt;
      required: @UnknownKeyFor Collection&lt;?[ extends capture[ extends @UnknownKeyFor NodeInfo super @UnknownKeyFor Void] super @KeyForBottom Void]&gt;
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/iterators/ReverseListIterator.java</fileName>
    <specifier>assignment</specifier>
    <message>incompatible types in assignment.</message>
    <lineContent>this.items = null;</lineContent>
    <details>
      found   : null (NullType)
      required: @Initialized @NonNull List&lt;? extends @Initialized @NonNull NodeInfo&gt;
    </details>
  </checkerFrameworkError>

  <checkerFrameworkError unstable="false">
    <fileName>src/main/java/com/puppycrawl/tools/checkstyle/xpath/iterators/ReverseListIterator.java</fileName>
    <specifier>return</specifier>
    <message>incompatible types in return.</message>
    <lineContent>return result;</lineContent>
    <details>
      type of expression: @Initialized @Nullable NodeInfo
      method return type: @Initialized @NonNull NodeInfo
    </details>
  </checkerFrameworkError>
</suppressedErrors>