src/Bunny/Channel.php
public function ack(Message $message, $multiple = false)
    {
        return $this->ackImpl($message->deliveryTag, $multiple);
    }
public function ack(Message $message, $multiple = false)
    {
        return $this->ackImpl($message->deliveryTag, $multiple);
    }
public function ack ( Message $ message , $ multiple = false ) { return $ this -> ackImpl ( $ message -> deliveryTag , $ multiple ) ; }
Acks given message.

@param Message $message
@param boolean $multiple
@return boolean|PromiseInterface
Acks given message .