扩展编辑器代码里，怎样获得当前选择的node

Creator 2.x
#1

var nodeID = Editor.Selection.curSelection(‘node’);
Editor.log(‘Button clicked!’, nodeID);
Editor.Ipc.sendToPanel(
‘scene’,
‘scene:query-node’,
nodeID,
( err, nodeInfo ) => {
Editor.log(nodeInfo)
var nodeObj = JSON.parse(nodeInfo);
Editor.log(nodeObj.value)
}

有没有简单的方法获得当前选中的node啊？