docs: protected S getService() {
      // No need to recreate it
      if (service != null) {
        return service;
      }
  
      Retrofit.Builder retrofitBuilder = new Retrofit.Builder()
        .baseUrl(baseUrl())
        .addConverterFactory(GsonConverterFactory.create(getGsonBuilder().create()));
  
      if (getCallFactory() != null) {
        retrofitBuilder.callFactory(getCallFactory());
      } else {
        retrofitBuilder.client(getOkHttpClient());
      }
  
      retrofit = retrofitBuilder.build();
      service = (S) retrofit.create(serviceType);
      return service;
    }