RetroClientInterceptor.java

    OkHttpClient.Builder clientBuilder = new OkHttpClient.Builder();

    HttpLoggingInterceptor loggingInterceptor = new HttpLoggingInterceptor();

    // set your desired log level
    loggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BODY);

    // add logging as last interceptor
    clientBuilder.addInterceptor(loggingInterceptor);

    return new Retrofit.Builder().baseUrl(ROOT_URL)
        .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
        .addConverterFactory(GsonConverterFactory.create())
        .build();