Error Prone 2.52.0

New checks:

• AlmostExhaustiveTestParameter: Prefer an exhaustive @TestParameter with an assumption to filter out specific enum values, so newly added enum values are automatically tested (disabled by default).
• SingleTestParameter: Suggest @TestParameter on the parameter instead of @TestParameters when there is only one test parameter, replacing PreferTestParameter (disabled by default).
• SingleValueTestParameter: Suggest replacing a @TestParameter that has only a single value with a local variable in the test method (disabled by default).
• ValueClassEquals: Require non-record concrete value classes to explicitly override equals and hashCode.

Other changes:

• LoopToTestParameter: Changed severity to SUGGESTION (disabled by default).
• DistinctVarargsChecker: Allow duplicate arguments to Iterables.concat (#6239) and Mockito argument matchers such as any() (#6240).
• UnusedVariable: Treat fields accessed via MethodHandles.Lookup (VarHandle/getter/setter lookups) or Atomic*FieldUpdater.newUpdater as used.
• StringBuilderInitWithChar / StringBuffer refactoring: Refactor StringBuffer to StringBuilder even when used with Matcher.appendReplacement and appendTail (when supported by the target JDK or Android minSdkVersion).
• CompileTimeConstant: Treat record and interface fields and field accesses on compile-time constants (compileTimeConstant.compileTimeConstantField) as compile-time constants.
• ValueClassIdentity / ReferenceEquality: Handle JEP 401 value classes.
• FieldCanBeFinal / ThreadSafety: Improve compile-time performance on large classes and deep type hierarchies, and update SafeRE to 1.1.0 (#6230).
• Added ClassName for caching resolved ClassSymbol, Type, and binary Name lookups across a compilation.

Closed issues: #5964, #6165, #6230, #6239, #6240, #6275

Full changelog: v2.51.0...v2.52.0