AMQPClientWrapper is a simple interface, implemented by *AMQPClientWrapper It exists only so we can return AMQPSession, which itself only exists so we can return interfaces for AMQPSender and AMQPReceiver from AMQPSession.

Error is a wrapper that has the context of which connection and link the error happened with.

RPCResponse is the simplified response structure from an RPC like call.

AMQPReceiver is implemented by *amqp.Receiver.

AMQPReceiverCloser is implemented by *amqp.Receiver.

AMQPSender is implemented by *amqp.Sender.

AMQPSenderCloser is implemented by *amqp.Sender.

AMQPSession is a simple interface, implemented by *AMQPSessionWrapper.

RPCLink is implemented by *rpc.Link.

ContextWithTimeoutFn matches the signature for `context.WithTimeout` and is used when we want to stub things out for tests.