HarmonyOS key中包含点的Json字符串怎么解析？

可以参照以下demo进行解析:

@Entry
@Component
struct Index {
  @State message: string = 'json解析';
  build() {
    Row() {
      Column() {
        Text(this.message)
          .fontSize(50)
          .fontWeight(FontWeight.Bold)
          .onClick(() => {
            let jsonStr = '{"code":1,"name":"123","wait.time":3}'
            let obj: ESObject = JSON.parse(jsonStr)
            console.log('获取wait.time属性结果:' + obj['wait.time'])
          })
      }
      .width('100%')
    }
    .height('100%')
  }
}