ApiClient for multiple service

ApiClient

import com.jakewharton.u2020.data.api.GithubService;
import com.jakewharton.u2020.data.api.transforms.WeatherService;
import com.squareup.okhttp.OkHttpClient;

import retrofit.Retrofit;

public class ApiClient {

  private static GithubService githubService;
  private static WeatherService weatherService;

  private ApiClient() {
    // No instances
  }
  
  public static GithubService getGithubService(){
    if (githubService == null) {
      githubService = RestAdapter.GITHUB.getApiClient().create(GithubService.class);
    }
    return githubService;
  }

  public static WeatherService getWeatherService(){
    if (weatherService == null) {
      weatherService = RestAdapter.WEATHER.getApiClient().create(WeatherService.class);
    }
    return weatherService;
  }

  private enum RestAdapter {

    GITHUB {
      @Override
      public Retrofit getApiClient() {
        return new Retrofit.Builder()
                .client(new OkHttpClient())
                .baseUrl(BuildConfig.GithubEndpoint)
                // .addConverterFactory(MoshiConverterFactory.create(null))
                .build();
      }
    },

    WEATHER {
      @Override
      public Retrofit getApiClient() {
        return new Retrofit.Builder()
                .client(new OkHttpClient())
                .baseUrl(BuildConfig.WeatherEndpoint)
                // .addConverterFactory(MoshiConverterFactory.create(null))
                .build();
      }
    };

    abstract Retrofit getApiClient();
  }
}

Very useful! Thanks.