HarmonyOS 自定义弹窗（CustomDialog）无法关闭

@CustomDialog  
struct CustomDialogExample {  
  controller: CustomDialogController  
  confirm?: () => void  
  build() {  
    Column() {  
      Text('关闭')  
        .fontSize(20)  
        .margin({ top: 10, bottom: 10 })  
        .onClick(() => {  
          Toast.showToast("controller: "+this.controller)  
          this.controller.close()  
          if (this.confirm) {  
            this.confirm()  
          }  
        })  
    }  
  }  
}

Text("test alert")  
  .fontSize(20)  
  .fontWeight(FontWeight.Bold)  
  .onClick(() => {  
    const dialogController: CustomDialogController = new CustomDialogController({  
      builder: CustomDialogExample({  
        confirm: () => {  
          console.info('Callback when the first button is clicked 22')  
        },  
      }),  
      alignment: DialogAlignment.Center,  
      autoCancel: false  
    })  
    dialogController.open()  
  })