HarmonyOS ArkTS支持重写hashCode值吗？

目前文档中暂未提到可支持重写该方法。请尝试如下方法：

export class TestMap {
  message: string;
  constructor(msg: string) {
    this.message = msg;
  }
}
export function Test(){
  let test1 = new TestMap("test");
  let test2 = new TestMap("test");
  let test1Json = JSON.stringify(test1) as string
  let test2Json = JSON.stringify(test2) as string
  let testMap = new Map<string, TestMap>();
  testMap.set(test1Json, test1);
  testMap.set(test2Json, test2);
  console.log(`testMap size=${testMap.size}`);
  console.log(`test1Json=${test1Json}`);
  console.log(`test2Json=${test2Json}`);
}