docs: def validate_request_table(self, request):
          '''
          Validates that all requests have the same table name. Set the table
          name if it is the first request for the batch operation.
  
          request:
              the request to insert, update or delete entity
          '''
          if self.batch_table:
              if self.get_request_table(request) != self.batch_table:
                  raise AzureBatchValidationError(_ERROR_INCORRECT_TABLE_IN_BATCH)
          else:
              self.batch_table = self.get_request_table(request)