docs: def generate_supplied_diff_subparser(subparsers):
      """Adds a sub-command parser to `subparsers` to run a diff query using
      the supplied results sets."""
      parser = subparsers.add_parser(
          'sdiff', description=constants.SUPPLIED_DIFF_DESCRIPTION,
          epilog=constants.SUPPLIED_DIFF_EPILOG,
          formatter_class=ParagraphFormatter, help=constants.SUPPLIED_DIFF_HELP)
      parser.set_defaults(func=supplied_diff)
      utils.add_common_arguments(parser)
      utils.add_tokenizer_argument(parser)
      utils.add_db_arguments(parser, True)
      utils.add_supplied_query_arguments(parser)