docs: def parse_args(cls, logging=False):
          """
          Parses command line arguments.
  
          Looks for --liveandletdie [host]
  
          :returns:
              A ``(str(host), int(port))`` or ``(None, None)`` tuple.
          """
  
          cls._add_args()
          args = cls._argument_parser.parse_args()
  
          if args.liveandletdie:
              _log(logging, 'Running as test live server at {0}'
                   .format(args.liveandletdie))
              return split_host(args.liveandletdie)
          else:
              return None, None