Don't use lambdas for methods with type parameters.

[mbruggmann]

For a method that has a type parameter, we can't replace anonymous class declarations with a lambda. For example:

public interface I {
  <T> List<T> call();
}

// Can't be replaced by lambda
final I i = new I() {
  @Override
  public <T> List<T> call() { ... }
};

The proposed fix is to check the method in question for type parameters, and if there are any, return early from UseLambdaForFunctionalInterface without making any changes.

Fixes #309

[timtebeek]

Thanks a lot for exploring, finding and contributing the fix!

[github-actions]

Some suggestions could not be made:

• src/main/java/org/openrewrite/staticanalysis/ReplaceDuplicateStringLiterals.java
  • lines 250-250