// This configuration is common with Private Google Access:
// https://cloud.google.com/vpc/docs/private-google-access
auto options = google::cloud::Options{}.set<google::cloud::EndpointOption>(
"private.googleapis.com");
auto client =
google::cloud::compute_target_instances_v1::TargetInstancesClient(
google::cloud::ExperimentalTag{},
google::cloud::compute_target_instances_v1::
MakeTargetInstancesConnectionRest(
google::cloud::ExperimentalTag{}, options));