public function getResponders($action)
    {
        if (!is_string($action) || empty($action)) {
            throw new \InvalidArgumentException('The action name is invalid');
        }

        return $this->responders[$action];
    }
public function getResponders($action)
    {
        if (!is_string($action) || empty($action)) {
            throw new \InvalidArgumentException('The action name is invalid');
        }

        return $this->responders[$action];
    }
public function getResponders ( $ action ) { if ( ! is_string ( $ action ) || empty ( $ action ) ) { throw new \ InvalidArgumentException ( 'The action name is invalid' ) ; } return $ this -> responders [ $ action ] ; }
Gets all registered responders assigned to the given event action.

@param string $action The event action
@return array
@throws \InvalidArgumentException if the action name is invalid.
Gets all registered responders assigned to the given event action .