docs: def insert_request_to_batch(self, request):
          '''
          Adds request to batch operation.
  
          request:
              the request to insert, update or delete entity
          '''
          self.validate_request_table(request)
          self.validate_request_partition_key(request)
          self.validate_request_row_key(request)
          self.batch_requests.append(request)