def METHOD_NAME(self, args):
    action = self._get_subparser_action()
    if action.dest == argparse.SUPPRESS:
        self.error('cannot get subparser, the subparser action dest is suppressed')
    name = getattr(args, action.dest)
    try:
        return action._name_parser_map[name]
    except KeyError:
        self.error('no subparser for name "%s"' % name)