public function enqueue(... $items) : Queue
    {
        $values = $this->_pushAll($items);
        $this->setValues($values);
        return $this;
    }
public function enqueue(... $items) : Queue
    {
        $values = $this->_pushAll($items);
        $this->setValues($values);
        return $this;
    }
public function enqueue ( ... $ items ) : Queue { $ values = $ this -> _pushAll ( $ items ) ; $ this -> setValues ( $ values ) ; return $ this ; }
Add item to the queue

@param mixed $items

@return Queue
Add item to the queue