private function setupConsume($flags, $consumer_tag = null)
{
$auto_ack = boolval($flags & AMQP_AUTOACK);
if ($consumer_tag === null) {
$consumer_tag = '';
}
//Man-in-the-middle callback to transform response to an envelope.
//AMQPProtocolChannelException
$queue = $this;
list($this->consumer_tag) = $this->channel->_getChannel()->basic_consume($this->name, $consumer_tag, $no_local = false, $auto_ack, $exclusive = false, $nowait = false, function (AMQPMessage $message) use($queue) {
$queue->last_envelope = AMQPEnvelope::fromAMQPMessage($message);
});
}
