Future< SomeJsonResponse > fetchLinks() async {
        http.Response uriResponse = await client.get("google.com");
    if (uriResponse.statusCode == 200) {
      return parseRes(uriResponse.body);
    } else {
      throw Exception("Что-то пошло не так");
    }


FutureBuilder<SomeJsonResponse>(
        future: ApiService.instance.fetchLinks(),
        builder: (context, snapshot) {
          switch (snapshot.connectionState) {
            case ConnectionState.none:
              return Text('Press button to start.');
            case ConnectionState.active:
            case ConnectionState.waiting:
              return Text('Awaiting result...');
            case ConnectionState.done:
              if (snapshot.hasError) return Text('Error: ${snapshot.error}');
              return Text(snapshot.data.title);
          }
          return Container(); // unreachable
        },
      ),