Samplefile

import 'package:http/http.dart' as http;

Future<String> getIdToken({bool? force}) async {
  // fetch update token
  return "abc*******";
}

Future<void> main() async {
  final client = http.Client();
  final token = await getIdToken();
  
  try{
    final response = await client.get(Uri.parse("https://api.***.server"));
  }catch(e){
    print("token: $token");
  }
}