https://docs.cloud.google.com/java/docs/reference/google-cloud-gkehub/latest/com.google.cloud.gkehub.v1beta.GkeHubGrpc.GkeHubBlockingStub
Class GkeHubGrpc.GkeHubBlockingStub (1.91.0) | Java client libraries | Google Cloud Documentation
https://docs.cloud.google.com/java/docs/reference/google-cloud-gkehub/latest/com.google.cloud.gkehub.v1beta.GkeHubGrpc.GkeHubFutureStub
Class GkeHubGrpc.GkeHubFutureStub (1.91.0) | Java client libraries | Google Cloud Documentation