original_string: protected function sourceFileExists($filename)
      {
          $fullFilename = $this->formDir . $filename;
          if (file_exists($fullFilename)) {
              return true;
          }
  
          return false;
      }
code: protected function sourceFileExists($filename)
      {
          $fullFilename = $this->formDir . $filename;
          if (file_exists($fullFilename)) {
              return true;
          }
  
          return false;
      }
code_tokens: protected function sourceFileExists ( $ filename ) { $ fullFilename = $ this -> formDir . $ filename ; if ( file_exists ( $ fullFilename ) ) { return true ; } return false ; }
docstring: Check if the xml file still exists in the directory
  
  @param $filename
  @return bool
docstring_tokens: Check if the xml file still exists in the directory