In some cases, you may need to override the default endpoint used by the client library. Use the EndpointOption when initializing the client library to change this default.
For example, this will override the default endpoint for optimization_v1::FleetRoutingClient:
// 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::optimization_v1::FleetRoutingClient(
google::cloud::optimization_v1::MakeFleetRoutingConnection(options));
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14 UTC."],[[["\u003cp\u003eThe latest stable version available is 2.21.0, with a release candidate version 2.37.0-rc also available.\u003c/p\u003e\n"],["\u003cp\u003eThis page provides links to documentation for various versions, starting from 2.11.0 up to the latest release candidate 2.37.0-rc, in descending order.\u003c/p\u003e\n"],["\u003cp\u003eUsers can override the client library's default endpoint by using the \u003ccode\u003eEndpointOption\u003c/code\u003e when initializing the library.\u003c/p\u003e\n"],["\u003cp\u003eOverriding the default endpoint, such as to \u003ccode\u003eprivate.googleapis.com\u003c/code\u003e, is useful in setups like Private Google Access.\u003c/p\u003e\n"]]],[],null,[]]