title: Massively refactor - how to add final keyword to Java method argument
body: <p>This might be a simple question: How can I massively refactor my Java code to make most of the method argument as "final"? This is to follow one of our "checkstyle" rule. We have thousands of Java files, so manually edit all of them seems not an acceptable solution to us.</p>
  
  <p>I didn't find any such refactor option in IntelliJ. Anybody knows any tool that can help? Or any smart approach to achieve that?</p>