afterPlay method
Implementation
TweenSet afterPlay(ChartTween tween) {
_TweenNode node = _TweenNode(tween, Duration.zero);
if (_currentNode == null) {
_currentNode = node;
} else {
node.parent = _currentNode;
_currentNode!.childList.add(node);
_currentNode = node;
}
_nodeList.add(node);
return this;
}