def METHOD_NAME(self, parser):
    parser.add_argument('--sims', '--for', action='store', nargs='*',
                        metavar='simulation_name',
                        help='Specify a simulation (or multiple simulations) to run on')
    parser.add_argument('--with-ids', action='store_true',
                        help="Store the consistent-trees ids as a property for each halo")