Function dispose

packages/fairygui/src/display/DisplayObject.ts:626–637

* Dispose * 销毁

()

     * 销毁
     */
    public dispose(): void {
        if (this._parent) {
            this._parent.removeChild(this);
        }

        for (const child of this._children) {
            child.dispose();
        }

        this._children.length = 0;
        super.dispose();
    }
}