public function shutdown(): void
    {
        if ($this->childPID) {
            $message = '{type}: QUIT received; shutting down after child completes work';
        } else {
            $message = '{type}: QUIT received; shutting down';
        }

        $this->logger->notice($message, ['type' => $this->name]);
        $this->doShutdown();
    }
public function shutdown(): void
    {
        if ($this->childPID) {
            $message = '{type}: QUIT received; shutting down after child completes work';
        } else {
            $message = '{type}: QUIT received; shutting down';
        }

        $this->logger->notice($message, ['type' => $this->name]);
        $this->doShutdown();
    }
{@inheritdoc}

@return void