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Apply optional dependency to kotlin support related dependency
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/* | ||
* Copyright 2002-2020 the original author or authors. | ||
* | ||
* Licensed under the Apache License, Version 2.0 (the "License"); | ||
* you may not use this file except in compliance with the License. | ||
* You may obtain a copy of the License at | ||
* | ||
* https://www.apache.org/licenses/LICENSE-2.0 | ||
* | ||
* Unless required by applicable law or agreed to in writing, software | ||
* distributed under the License is distributed on an "AS IS" BASIS, | ||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
* See the License for the specific language governing permissions and | ||
* limitations under the License. | ||
*/ | ||
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package feign.kotlinSupport; | ||
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/** | ||
* Assertion utility class that assists in validating arguments. | ||
* | ||
* <p>Useful for identifying programmer errors early and clearly at runtime. | ||
* | ||
* <p>For example, if the contract of a public method states it does not | ||
* allow {@code null} arguments, {@code Assert} can be used to validate that | ||
* contract. Doing this clearly indicates a contract violation when it | ||
* occurs and protects the class's invariants. | ||
* | ||
* <p>Typically used to validate method arguments rather than configuration | ||
* properties, to check for cases that are usually programmer errors rather | ||
* than configuration errors. In contrast to configuration initialization | ||
* code, there is usually no point in falling back to defaults in such methods. | ||
* | ||
* <p>This class is similar to JUnit's assertion library. If an argument value is | ||
* deemed invalid, an {@link IllegalArgumentException} is thrown (typically). | ||
* For example: | ||
* | ||
* <pre class="code"> | ||
* Assert.notNull(clazz, "The class must not be null"); | ||
* Assert.isTrue(i > 0, "The value must be greater than zero");</pre> | ||
* | ||
* <p>Mainly for internal use within the framework; for a more comprehensive suite | ||
* of assertion utilities consider {@code org.apache.commons.lang3.Validate} from | ||
* <a href="https://commons.apache.org/proper/commons-lang/">Apache Commons Lang</a>, | ||
* Google Guava's | ||
* <a href="https://github.com/google/guava/wiki/PreconditionsExplained">Preconditions</a>, | ||
* or similar third-party libraries. | ||
* | ||
* @author Keith Donald | ||
* @author Juergen Hoeller | ||
* @author Sam Brannen | ||
* @author Colin Sampaleanu | ||
* @author Rob Harrop | ||
* @since 1.1.2 | ||
*/ | ||
public abstract class Assert { | ||
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/** | ||
* Assert that an object is not {@code null}. | ||
* <pre class="code">Assert.notNull(clazz, "The class must not be null");</pre> | ||
* @param object the object to check | ||
* @param message the exception message to use if the assertion fails | ||
* @throws IllegalArgumentException if the object is {@code null} | ||
*/ | ||
public static void notNull(Object object, String message) { | ||
if (object == null) { | ||
throw new IllegalArgumentException(message); | ||
} | ||
} | ||
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} |
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