HarmonyOS ets不支持匿名类吗？

export interface IVoiceRecordListener<T> { 
  onSuccess:(t: T)=> void 
  onFailed:(code: string, reason: string)=> void 
} 
 
let voiceRecordListenerInstance: IVoiceRecordListener<void> = { 
  onSuccess: () => { 
    console.log('success') 
  }, 
  onFailed: () => { 
    console.log('failed') 
  } 
}
// 原先 
class A { 
  foo() { 
    let a = new class { 
      v: number = 123 
    }(); 
  } 
} 
// 现在 
class A { 
  foo() { 
    class B { 
      v: number = 123 
    } 
    let b = new B(); 
  } 
}