parameters: (self, old_text, new_text, filename, equal)
docstring: Called with the old version, new version, and filename of a
          refactored file.
docstring_summary: Called with the old version, new version, and filename of a
          refactored file.
docstring_tokens: Called with the old version new version and filename of a refactored file .
function: def print_output(self, old_text, new_text, filename, equal):
          """Called with the old version, new version, and filename of a
          refactored file."""
          pass
function_tokens: def print_output ( self , old_text , new_text , filename , equal ) : pass