HarmonyOS 泛型构造方法在ets中的实现

目前参数不支持构造函数函数类型，实现参考示例：

interface BeeKeeper {
  hasMask: boolean;
}

interface ZooKeeper {
  nametag: string
}

interface Animal {
  numLegs: number
  keeper?: BeeKeeper | ZooKeeper
}

export class createInstance {
  options: Animal

  constructor(option: Animal) {
    this.options = option;
  }

  getNumLegsValue(): number {
    if (this.options.numLegs !== undefined) {
      return this.options.numLegs;
    }
    return 0;
  }

  getKeeperValue(): BeeKeeper | ZooKeeper | undefined {
    if (this.options.keeper !== undefined) {
      return this.options.keeper;
    }
    return undefined;
  }
}

const numLegsValue = new createInstance({ numLegs: 123456 }).getNumLegsValue();
const KeeperValue = new createInstance({ numLegs: 123456, keeper: { hasMask: false } }).getKeeperValue();
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