Subscribe to an AMQP Queue
Subscribing to queues involves declaring a queue, binding with a routing key, and then subscribing to the declared queue.
The queue routing key supports the “*” and “#” wildcard characters to match a single segment and zero or more segments. For example true.*.*.*. com.vmware.vcloud.event.vm.create or true.#.com.vmware.vcloud.event.vm.create routes a notification to the queue with this binding key every time any user from any organization successfully creates a virtual machine).
Declaring asserts the existence of the object. If the object does not exist, declaring it creates it.