HarmonyOS Context在taskpool里怎么获取

参考示例：

import { taskpool } from '@kit.ArkTS';
import { BusinessError } from '@kit.BasicServicesKit';

@Entry
@Component
struct Index {
  @State message: string = 'Hello World';

  build() {
    RelativeContainer() {
      Text(this.message)
        .id('HelloWorld')
        .fontSize(50)
        .fontWeight(FontWeight.Bold)
        .alignRules({
          center: { anchor: '__container__', align: VerticalAlign.Center },
          middle: { anchor: '__container__', align: HorizontalAlign.Center }
        })
        .onClick(()=>{
        })
      Button('加载')
        .onClick(()=>{
          taskpool.execute(test, 1, getContext(this)).then((value)=>{
            console.info('111111333333')
          }).catch((e: BusinessError)=>{
            console.error(`11111111111444444taskpool execute-1: Code: ${e.code}, message: ${e.message}`);
          })

        })
    }
    .height('100%')
    .width('100%')
  }
}

@Concurrent function test(context: number, ctx: Context) {
  console.info('111111222222')
  console.info('tag' + ctx)
  console.info('1111111')
}