It appears lambdas are not triggered from items being pushed to SQS if [SendMessageBatch](https://docs.aws.amazon.com/AWSSimpleQueueService/latest/APIReference/API_SendMessageBatch.html) is used instead of [SendMessage](https://docs.aws.amazon.com/AWSSimpleQueueService/latest/APIReference/API_SendMessage.html)
def forward_request(self, method, path, data, headers):
        if method == 'OPTIONS':
            return 200
        req_data = parse_request_data(method, path, data)
        if req_data:
            action = req_data.get('Action', [None])[0]
            if action == 'SetQueueAttributes':
                queue_url = _queue_url(path, req_data, headers)
                forward_attrs = _set_queue_attributes(queue_url, req_data)
                if len(req_data) != len(forward_attrs):
                    
                    return _get_attributes_forward_request(method, path, headers, req_data, forward_attrs)
            elif action == 'DeleteQueue':
                QUEUE_ATTRIBUTES.pop(_queue_url(path, req_data, headers), None)
            elif action == 'ListDeadLetterSourceQueues':
                queue_url = _queue_url(path, req_data, headers)
                headers = {'content-type': 'application/xhtml+xml'}
                content_str = _list_dead_letter_source_queues(QUEUE_ATTRIBUTES, queue_url)
                return requests_response(content_str, headers=headers)
            if 'QueueName' in req_data:
                encoded_data = urlencode(req_data, doseq=True) if method == 'POST' else ''
                modified_url = None
                if method == 'GET':
                    base_path = path.partition('?')[0]
                    modified_url = '%s?%s' % (base_path, urlencode(req_data, doseq=True))
                return Request(data=encoded_data, url=modified_url, headers=headers, method=method)
        return True
    def return_response(self, method, path, data, headers, response, request_handler):