def METHOD_NAME():
    parser = argparse.ArgumentParser(description="""Generates RPM certificate for
        OS image building""")
    parser.add_argument('--ca-cert-full-path',
        help='CA certificate filename (default: %s)' % CA_CERT_FULL_PATH_DEFAULT,
        default=CA_CERT_FULL_PATH_DEFAULT)
    parser.add_argument('--target-os',
        help='Target OS',
        default='')
    args = parser.parse_args()
    if not os.path.isfile(args.ca_cert_full_path):
        print("""WARNING: File '%s' cannot be opened or does not represent
        CA certificate.""" % args.ca_cert_full_path)
        print("""Please rerun '%s' with the option --ca-cert-full-path
        and the full path of your CA certificate to generate the RPM package
        needed to build OS images""" % sys.argv[0])
        print("See manpage for '%s' for additional help" % sys.argv[0])
        sys.exit(0)
    return args