def METHOD_NAME(cls, *args, **kwargs):
    if cls._args_schema is not None:
        return cls._args_schema
    cls._args_schema = super().METHOD_NAME(*args, **kwargs)
    # define Arg Group ""
    _args_schema = cls._args_schema
    _args_schema.order_alias_name = AAZStrArg(
        options=["--order-alias-name"],
        help="Name of the savings plan order alias",
        required=True,
        fmt=AAZStrArgFormat(
            pattern="^[a-zA-Z0-9_\-\.]+$",
        ),
    )
    return cls._args_schema