code: def create_data_descriptor(self, is_sequence: bool, collection_dimension_count: int, datum_dimension_count: int) -> DataAndMetadata.DataDescriptor:
          
          return DataAndMetadata.DataDescriptor(is_sequence, collection_dimension_count, datum_dimension_count)
docs: Create a data descriptor.
  
          :param is_sequence: whether the descriptor describes a sequence of data.
          :param collection_dimension_count: the number of collection dimensions represented by the descriptor.
          :param datum_dimension_count: the number of datum dimensions represented by the descriptor.
  
          .. versionadded:: 1.0
  
          Scriptable: Yes