healthCheck method

Implementation

@override
Future<dynamic> healthCheck() async {
  DataInitRet? initData = await _storage.initData;
  if (initData != null) {
    ApiResponse<EncApiRet> apiRegResp = await DtbLinkNet.instance.request(
      method: Method.post,
      path: "/v1/health_check",
      prefix: "register tran",
      fromJson: (dynamic ret) => EncApiRet.fromJson(ret),
      timeOut: const Duration(seconds: 20),
    );
    return apiRegResp.ret;
  }
  return ApiResponse(statusCode: "ng", msg: Msg());
}