How to use the azure-storage-queue.azure.storage.queue._deserialization._parse_metadata_and_message_count function in azure-storage-queue

A dictionary representing the queue metadata with an 
            approximate_message_count int property on the dict estimating the 
            number of messages in the queue.
        :rtype: dict(str, str)
        '''
        _validate_not_none('queue_name', queue_name)
        request = HTTPRequest()
        request.method = 'GET'
        request.host_locations = self._get_host_locations(secondary=True)
        request.path = _get_path(queue_name)
        request.query = {
            'comp': 'metadata',
            'timeout': _int_to_str(timeout),
        }

        return self._perform_request(request, _parse_metadata_and_message_count)