protected function callHandler($handler_id, $method, array $arguments)
    {
        try {
            $handlers = $this->getHandlers();
            return Handler::call($handlers, $handler_id, $method, $arguments);
        } catch (Exception $ex) {
            return $ex->getMessage();
        }
    }
protected function callHandler($handler_id, $method, array $arguments)
    {
        try {
            $handlers = $this->getHandlers();
            return Handler::call($handlers, $handler_id, $method, $arguments);
        } catch (Exception $ex) {
            return $ex->getMessage();
        }
    }
protected function callHandler ( $ handler_id , $ method , array $ arguments ) { try { $ handlers = $ this -> getHandlers ( ) ; return Handler :: call ( $ handlers , $ handler_id , $ method , $ arguments ) ; } catch ( Exception $ ex ) { return $ ex -> getMessage ( ) ; } }
Cal a handler
@param string $handler_id
@param string $method
@param array $arguments
@return mixed
Cal a handler