def METHOD_NAME():
    @commands.command(help='This is the short description that will appear.')
    async def describe(
        ctx: commands.Context,
        arg: str = commands.param(description='Description of arg.'),
        arg2: int = commands.param(description='Description of arg2.'),
    ) -> None:
        ...
    assert describe.help == 'This is the short description that will appear.'
    assert describe.clean_params['arg'].description == 'Description of arg.'
    assert describe.clean_params['arg2'].description == 'Description of arg2.'