1309         return self._add_action(action)
1321     def _add_action(self, action):  member in _ActionsContainer
1383             group_map.get(action, self)._add_action(action)
1508     def _add_action(self, action):  member in _ArgumentGroup
1509         action = super(_ArgumentGroup, self)._add_action(action)
1525     def _add_action(self, action):  member in _MutuallyExclusiveGroup
1529         action = self._container._add_action(action)
1672         self._subparsers._add_action(action)
1677     def _add_action(self, action):  member in ArgumentParser
1679             self._optionals._add_action(action)
1681             self._positionals._add_action(action)