in uber-rides/src/main/java/com/uber/sdk/rides/client/UberRidesApi.java [131:139]
Retrofit createRetrofit(OkHttpClient client, Session session) {
Moshi moshi = new Moshi.Builder().add(new BigDecimalAdapter()).build();
return new Retrofit.Builder()
.addConverterFactory(MoshiConverterFactory.create(moshi))
.baseUrl(session.getAuthenticator().getSessionConfiguration().getEndpointHost())
.client(client)
.build();
}