'Retrieves an existing queue.
queue_name:
Name of the queue.'

def get_queue(self, queue_name):

    _validate_not_none('queue_name', queue_name)
    request = HTTPRequest()
    request.method = 'GET'
    request.host = self._get_host()
    request.path = (('/' + _str(queue_name)) + '')
    (request.path, request.query) = self._httpclient._update_request_uri_query(request)
    request.headers = self._update_service_bus_header(request)
    response = self._perform_request(request)
    return _convert_response_to_queue(response)
