direct access to a queue

        This method provides a direct access to the messages in a
        queue using a synchronous dialogue that is designed for
        specific types of application where synchronous functionality
        is more important than performance.

        PARAMETERS:
            queue: shortstr

                Specifies the name of the queue to consume from.  If
                the queue name is null, refers to the current queue
                for the channel, which is the last declared queue.

                RULE:

                    If the client did not previously declare a queue,
                    and the queue name in this method is empty, the
                    server MUST raise a connection exception with
                    reply code 530 (not allowed).

            no_ack: boolean

                no acknowledgement needed

                If this field is set the server does not expect
                acknowledgments for messages.  That is, when a message
                is delivered to the client the server automatically and
                silently acknowledges it on behalf of the client.  This
                functionality increases performance but at the cost of
                reliability.  Messages can get lost if a client dies
                before it can deliver them to the application.

            ticket: short

                RULE:

                    The client MUST provide a valid access ticket
                    giving "read" access rights to the realm for the
                    queue.

        Non-blocking, returns a message object, or None.

def basic_get(self, queue='', no_ack=False, ticket=None):
        """
        direct access to a queue

        This method provides a direct access to the messages in a
        queue using a synchronous dialogue that is designed for
        specific types of application where synchronous functionality
        is more important than performance.

        PARAMETERS:
            queue: shortstr

                Specifies the name of the queue to consume from.  If
                the queue name is null, refers to the current queue
                for the channel, which is the last declared queue.

                RULE:

                    If the client did not previously declare a queue,
                    and the queue name in this method is empty, the
                    server MUST raise a connection exception with
                    reply code 530 (not allowed).

            no_ack: boolean

                no acknowledgement needed

                If this field is set the server does not expect
                acknowledgments for messages.  That is, when a message
                is delivered to the client the server automatically and
                silently acknowledges it on behalf of the client.  This
                functionality increases performance but at the cost of
                reliability.  Messages can get lost if a client dies
                before it can deliver them to the application.

            ticket: short

                RULE:

                    The client MUST provide a valid access ticket
                    giving "read" access rights to the realm for the
                    queue.

        Non-blocking, returns a message object, or None.

        """
        args = AMQPWriter()
        if ticket is not None:
            args.write_short(ticket)
        else:
            args.write_short(self.default_ticket)
        args.write_shortstr(queue)
        args.write_bit(no_ack)
        self._send_method((60, 70), args)
        return self.wait(allowed_methods=[
                          (60, 71),    # Channel.basic_get_ok
                          (60, 72),    # Channel.basic_get_empty
                        ])