docs: def parse_delete_zone(prs, conn):
      """Delete zone.
  
      Arguments:
  
          prs:  parser object of argparse
          conn: dictionary of connection information
      """
      prs_zone_delete = prs.add_parser('zone_delete', help='delete zone')
      prs_zone_delete.add_argument('--domain', action='store', required=True,
                                   help='specify zone')
      conn_options(prs_zone_delete, conn)
      prs_zone_delete.set_defaults(func=delete_zone)