if (msg == null)
{
_log.trace("Single ack on delivery tag " + deliveryTag + " not known for channel:" + _channelId);
throw new AMQException("Single ack on delivery tag " + deliveryTag + " not known for channel:" + _channelId);
}
msg.discard();
if (_log.isTraceEnabled())
{
_log.trace("Received non-multiple ack for messaging with delivery tag " + deliveryTag);
}
}