createChannel example

public function channel(): \AMQPChannel
    {
        if (!isset($this->amqpChannel)) {
            $connection = $this->amqpFactory->createConnection($this->connectionOptions);
            $connectMethod = 'true' === ($this->connectionOptions['persistent'] ?? 'false') ? 'pconnect' : 'connect';

            try {
                $connection->{$connectMethod}();
            } catch (\AMQPConnectionException $e) {
                throw new \AMQPException('Could not connect to the AMQP server. Please verify the provided DSN.', 0, $e);
            }
            $this->amqpChannel = $this->amqpFactory->createChannel($connection);

            if ('' !== ($this->connectionOptions['confirm_timeout'] ?? '')) {
                $this->amqpChannel->confirmSelect();
                $this->amqpChannel->setConfirmCallback(
                    static fn (): bool => false,
                    static fn (): bool => false
                );
            }

            $this->lastActivityTime = time();
        } elseif (0 < ($this->connectionOptions['heartbeat'] ?? 0) && time() > $this->lastActivityTime + 2 * $this->connectionOptions['heartbeat']) {