playAll method
播放所有分组的所有动画
Implementation
void playAll({Duration? duration}) {
_hasTriggeredAllCompleted = false;
for (final label in _groups.keys) {
_groupCompletionStatus[label] = false;
final group = _groups[label]!;
for (final controller in group) {
_controllerCompletionStatus[controller] = false;
_playController(controller, duration: duration);
}
}
}