Description:
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It should be possible to let rabbitmq server generate unique queue name.
Now this is not possible, because AMQPQueue::declare() throws exception when name is not set.

Test script:
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$con = new AMQPConnection();
$con->connect();
$queue = new AMQPQueue(new AMQPChannel($con));
$queue->declare();
echo $queue->getName();

Expected result:
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Should echo auto generated queue name (like 'amq.gen-U0srCoW8TsaXjNh73pnVAw==').

Actual result:
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Throws:
AMQPQueueException: 'Could not declare queue. Queues must have names.'