get buttonMode() {
        return this.cursor === 'pointer';
    }
If enabled, the mouse cursor use the pointer behavior when hovered over the displayObject if it is interactive
Setting this changes the 'cursor' property to `'pointer'`.
@example
const sprite = new PIXI.Sprite(texture);
sprite.interactive = true;
sprite.buttonMode = true;
@member {boolean}
@memberof PIXI.DisplayObject#