How to use the c2cwsgiutils.stats.init_backends function in c2cwsgiutils

def main():
    stats.init_backends({})
    parser = ArgumentParser(description='Used to generate the tiles', prog=sys.argv[0])
    add_comon_options(parser, dimensions=True)
    parser.add_argument(
        '--get-hash', metavar="TILE",
        help='get the empty tiles hash, use the specified TILE z/x/y'
    )
    parser.add_argument(
        '--get-bbox', metavar="TILE",
        help='get the bbox of a tile, use the specified TILE z/x/y, or z/x/y:+n/+n for metatiles'
    )
    parser.add_argument(
        '--role', default='local', choices=('local', 'master', 'slave'),
        help='local/master/slave, master to file the queue and '
        'slave to generate the tiles'
    )
    parser.add_argument(

def main():
    stats.init_backends({})
    parser = ArgumentParser(
        description='Used to generate the contextual file like the capabilities, the legends, '
        'the Apache and MapCache configuration',
        prog=sys.argv[0]
    )
    add_comon_options(parser, tile_pyramid=False, no_geom=False)
    parser.add_argument(
        '--status', default=False, action="store_true",
        help='Display the SQS queue status and exit'
    )
    parser.add_argument(
        '--capabilities', '--generate-wmts-capabilities', default=False, action='store_true',
        help='Generate the WMTS Capabilities'
    )
    parser.add_argument(
        '--legends', '--generate-legend-images', default=False, action='store_true', dest='legends',