AutoML_AuthorizationHeader.kt

val headerAuthorizationInterceptor = Interceptor() {
            var request = it.request()
            val headers = request.headers().newBuilder().add("Authorization","Bearer Enter Service Account Token here").build()
            request = request.newBuilder().headers(headers).build()
            return@Interceptor it.proceed(request)
        }

        httpClientBuilder.addInterceptor(headerAuthorizationInterceptor)

        okHttpClient = httpClientBuilder.build()