fix: support lists of arbitrary types

[oetr]

Previously, types like List<List<Integer>[]> failed because the
parameterTypeIfParameterized helper function incorrectly filtered out
generic array types. Removed this filtering since the mutation
framework already handles supported type matching.

[Copilot]

Pull request overview

This pull request fixes support for complex nested generic types like List<List<Integer>[]> by removing overly restrictive type filtering from the parameterTypeIfParameterized helper function. Previously, this function filtered out generic array types (GenericArrayType), preventing them from being used as list element types. The fix delegates type validation to the mutation framework, which already has proper support for these types.

Key changes:

• Simplified parameterTypeIfParameterized to remove type filtering logic that rejected GenericArrayType and other non-ParameterizedType/non-Class types
• Added test coverage for List<List<Integer>[]> to verify the fix works correctly
• Enhanced logging output in ArgumentsMutatorFuzzTest for better debugging

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

File	Description
src/main/java/com/code_intelligence/jazzer/mutation/support/TypeSupport.java	Removed restrictive type checks from parameterTypeIfParameterized, allowing generic array types to be returned as valid parameter types
src/test/java/com/code_intelligence/jazzer/mutation/support/TypeSupportTest.java	Added test case testParameterTypeIfParameterizedList to verify List<List<Integer>[]> is properly handled
selffuzz/src/test/java/com/code_intelligence/selffuzz/mutation/ArgumentsMutatorFuzzTest.java	Added fuzz test fuzzGenericClass to test mutation of List<List<Integer>[]> and improved logging to show parameter types for better debugging

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[simonresch]

Nice! Good find.