def METHOD_NAME(cls):
    """ Return a parser object with options relevant for input databases"""
    db_opts_parser = argparse.ArgumentParser(add_help=False)
    db_opts_group = db_opts_parser.add_argument_group(
        description ="Options for local input databases")
    db_opts_group.add_argument("--inputVDriftDB",
        help="Local alternative VDrift database")
    db_opts_group.add_argument("--inputCalibDB",
        help="Local alternative Ttrig database")
    db_opts_group.add_argument("--inputT0DB",
        help="Local alternative T0 database")
    return db_opts_parser