public function callback($method)
    {
        if (method_exists($this->owner, $method)) {
            return $this->owner->{$method}($this);
        }

        return;
    }
public function callback($method)
    {
        if (method_exists($this->owner, $method)) {
            return $this->owner->{$method}($this);
        }

        return;
    }
public function callback ( $ method ) { if ( method_exists ( $ this -> owner , $ method ) ) { return $ this -> owner -> { $ method } ( $ this ) ; } return ; }
Message callback.

@param $method
@return mixed
Message callback .