code: def pbs_for_set_no_merge(document_path, document_data):
      
      extractor = DocumentExtractor(document_data)
  
      if extractor.deleted_fields:
          raise ValueError(
              "Cannot apply DELETE_FIELD in a set request without "
              "specifying 'merge=True' or 'merge=[field_paths]'."
          )
  
      # Conformance tests require send the 'update_pb' even if the document
      # contains only transforms.
      write_pbs = [extractor.get_update_pb(document_path)]
  
      if extractor.has_transforms:
          transform_pb = extractor.get_transform_pb(document_path)
          write_pbs.append(transform_pb)
  
      return write_pbs
docs: Make ``Write`` protobufs for ``set()`` methods.
  
      Args:
          document_path (str): A fully-qualified document path.
          document_data (dict): Property names and values to use for
              replacing a document.
  
      Returns:
          List[google.cloud.firestore_v1beta1.types.Write]: One
          or two ``Write`` protobuf instances for ``set()``.