setupApollo.kt

private fun setupApollo(): ApolloClient {
        val okHttp = OkHttpClient
                .Builder()
                .addInterceptor({ chain ->
                    val original = chain.request()
                    val builder = original.newBuilder().method(original.method(),
                            original.body())
                    builder.addHeader("Authorization"
                            , "Bearer " + BuildConfig.AUTH_TOKEN)
                    chain.proceed(builder.build())
                })
                .build()
        return ApolloClient.builder()
                .serverUrl(BASE_URL)
                .okHttpClient(okHttp)
                .build()
    }