def METHOD_NAME(self, parser):
    parser.add_argument(
        "object", type=ProxyStringType("OriginalFile"),
        help="Object to download of form <object>:<id>. "
        "OriginalFile is assumed if <object>: is omitted.")
    parser.add_argument(
        "filename", help="Local filename (or path for Fileset) to be saved to. '-' for stdout")
    parser.set_defaults(func=self.__call__)
    parser.add_login_arguments()