onSignedOut method

@override void onSignedOut()

退出、会话结束、切换用户：清除内存中的数据、释放列表。

Implementation

@override
void onSignedOut() {
  _lifetime.cancel();
  _lifetime = DRCancelToken();
  final handle = _current;
  _current = null;
  if (handle != null) fireAndForget(handle.leave());
}