code: private function parseParameters(\ReflectionMethod $action)
      {
          $params = $action->getParameters();
          if (count($params) < 1) {
              return false;
          }
          
          $param = $params[0];
          assert($param instanceof \ReflectionParameter);
          if (! ($class = $param->getClass()) || $class->getName() != 'Nkey\Caribu\Mvc\Controller\Request') {
              return false;
          }
          
          return true;
      }
docs: Parse the parameters of action
  
  @param \ReflectionMethod $action
  
  @return boolean true if parameters meets conditions for a valid action method, false otherwise