uts如何实现Delegate的设置

@protocol SVGAPlayerDelegate <NSObject>

@optional

• (void)svgaPlayerDidFinishedAnimation:(SVGAPlayer *)player ;

• (void)svgaPlayer:(SVGAPlayer *)player didAnimatedToFrame:(NSInteger)frame;

• (void)svgaPlayer:(SVGAPlayer *)player didAnimatedToPercentage:(CGFloat)percentage;

• (void)svgaPlayerDidAnimatedToFrame:(NSInteger)frame API_DEPRECATED("Use svgaPlayer:didAnimatedToFrame: instead", ios(7.0, API_TO_BE_DEPRECATED));

• (void)svgaPlayerDidAnimatedToPercentage:(CGFloat)percentage API_DEPRECATED("Use svgaPlayer:didAnimatedToPercentage: instead", ios(7.0, API_TO_BE_DEPRECATED));

@end

我这样写

class ISVGAPlayerDelegate implements SVGAPlayerDelegate {
comp : UTSComponent<SVGAPlayer>
constructor(com : UTSComponent<SVGAPlayer>) {
this.comp = com;
super.init()
}

    svgaPlayerDidFinishedAnimation(_player : SVGAPlayer) : void {  
        // this.comp.__$$emit("onFinished");  
        this.comp.fireEvent("onFinished");  
    }  
}  

NVLoaded() { //原生View已创建
this.$el.delegate = new ISVGAPlayerDelegate(this);
},

这样实现后，并不能实现 svgaPlayerDidFinishedAnimation 事件的监听。
另外，- (void)svgaPlayer:(SVGAPlayer *)player didAnimatedToFrame:(NSInteger)frame;

• (void)svgaPlayer:(SVGAPlayer *)player didAnimatedToPercentage:(CGFloat)percentage; 这2个如何实现呢？