def METHOD_NAME():
    p = argparse.ArgumentParser(description=__doc__,
                                formatter_class=argparse.RawTextHelpFormatter)
    p.add_argument('in_mask',
                   help='Mask volume filename.\nCan be a binary mask or a '
                        'weighted mask.')
    p_metric = p.add_argument_group('Metrics input options')
    g_metric = p_metric.add_mutually_exclusive_group(required=True)
    g_metric.add_argument('--metrics_dir',
                          help='Metrics files directory. Name of the '
                               'directory containing the metrics files.')
    g_metric.add_argument('--metrics', dest='metrics_file_list', nargs='+',
                          help='Metrics nifti filename. List of the names of '
                               'the metrics file, in nifti format.')
    p.add_argument('--bin', action='store_true',
                   help='If set, will consider every value of the mask '
                        'higher than 0 to be part of the mask, and set to 1 '
                        '(equivalent weighting for every voxel).')
    p.add_argument('--normalize_weights', action='store_true',
                   help='If set, the weights will be normalized to the [0,1] '
                        'range.')
    add_overwrite_arg(p)
    add_json_args(p)
    return p