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code-style UnnecessaryParentheses (PMD)

This statement may have some unnecessary parentheses

Sometimes expressions are wrapped in unnecessary parentheses, making them look like a function call.

  public class Foo {
      boolean bar() {
          return (true);
      }
  }
      

Additional info can be found at this http://pmd.sourceforge.net/rules/controversial.html#UnnecessaryParentheses site.