original_string: public function getFilterKey($action = null)
      {
          // controller.action
          $controller = $this->getName();
          return $action ? $controller . '.' . $action : $controller;
      }
code: public function getFilterKey($action = null)
      {
          // controller.action
          $controller = $this->getName();
          return $action ? $controller . '.' . $action : $controller;
      }
code_tokens: public function getFilterKey ( $ action = null ) { // controller.action $ controller = $ this -> getName ( ) ; return $ action ? $ controller . '.' . $ action : $ controller ; }
docstring: Get filter key
  
  @param   string  $action
  @return  string
docstring_tokens: Get filter key