WorkerPool.php
public function unregisterRead(LoopInterface $loop)
    {
        foreach ($this->workers as $worker) {
            Selectable::unregisterRead($loop, $worker);
        }

        return $this;
    }
public function unregisterRead(LoopInterface $loop)
    {
        foreach ($this->workers as $worker) {
            Selectable::unregisterRead($loop, $worker);
        }

        return $this;
    }
@param LoopInterface $loop

@return $this