def METHOD_NAME(parser, *extra_args, default=[None]):
    """Add argument for billing projects."""
    add_argument(
        parser,
        "-p",
        "--billing-projects",
        "--billing_projects",
        "--billing-project",
        "--billing_project",
        *extra_args,
        nargs="+",
        default=default,
        help="One or more billing projects over which bigquery jobs should be "
        "distributed",
    )