def METHOD_NAME(self) -> None:
    self.cmd_opts.add_option(
        "--format",
        action="store",
        dest="list_format",
        default="human",
        choices=("human", "abspath"),
        help="Select the output format among: human (default) or abspath",
    )
    self.parser.insert_option_group(0, self.cmd_opts)