如何删除CreateJs里的stage舞台

Question

1.想要webgl丢失上下文的时候，做一些容错处理

 this.stage = new createjs.StageGL(this.renderCanvasDom, { transparent: true , preserveBuffer : true})

    this.canvas = this.stage.canvas as HTMLCanvasElement

    this.gl = this.canvas.getContext('webgl')  || this.canvas.getContext("experimental-webgl") as WebGLRenderingContext;
    
this.canvas.addEventListener('webglcontextlost', (e) => {
      e.preventDefault();
      // todo：怎么样重绘一个可以用的stageGl
      // this.stage = new createjs.StageGL(this.renderCanvasDom, { transparent: true , preserveBuffer : true})
    }, false);

2.或者怎么样合理的实现restoreContext()