HarmonyOS鸿蒙Next中NavDestination的onReady入参context是空对象该怎么解决？

HarmonyOS鸿蒙Next中NavDestination的onReady入参context是空对象该怎么解决？

@Entry @ComponentV2 struct Index {
  @Local NavigationStack : NavPathStack = new NavPathStack() ;

  @Builder navDestination_builder( name : string , param : string | null ) {
    if( name === "boo" ) {
      NavDestination() {
        Text( "This is boo!!" )
          .fontSize( 25 )
      }
        .height( "100%" )
        .width( "100%" )
        .onReady(
          ( context : NavDestinationContext ) => {
            // Here prints the context
            console.log( "!!! Context:\n" + JSON.stringify( context , undefined , 2 ) ) ;
          }
        )
    } else {
      // "else" goes to here
      NavDestination() {
        Text( "Else page…" )
          .fontSize( 25 )
        Button( "Push \"boo\"" )
          .onClick(
            () => {
              this.NavigationStack.pushPath( { name : "boo" , param : "Boo!!" } ) ;
              console.log( "!!! Stack\n" + JSON.stringify( this.NavigationStack , undefined , 2 ) ) ;
            }
          )
      }
        .height( "100%" )
        .width( "100%" )
    }
  }

  build() {
    Navigation( this.NavigationStack ) {
      Button( "Push \"else\"" )
        .onClick(
          () => {
            this.NavigationStack.pushPath( { name : "else" , param : null } ) ;
            console.log( "!!! Stack\n" + JSON.stringify( this.NavigationStack , undefined , 2 ) ) ;
          }
        )
    }
      .height( "100%" )
      .width( "100%" )
      .navDestination( this.navDestination_builder )
  }
}

简单写了个demo，其中onReady的context打印出来就是{}，没搞太明白，是哪一步的姿势有问题？

实际写的时候destination的UI和逻辑包在在自定义组件里面，还是通过onReady获取参数方便些，但是一直获取不到就有些苦恼人了。

走过路过的大佬不要错过，我隔着网线给你啵一个😘