proto messages. Protobuf serialization of Kubernetes API types should use [k8s.io/apimachinery/pkg/runtime/serializer/protobuf](https://pkg.go.dev/k8s.io/apimachinery/pkg/runtime/serializer/protobuf). See [KEP-5589](https://github.com/kubernetes/enhancements/tree/master/keps/sig-api-machinery/5589-gogo-dependency) for more details. ([#137084](https://github.com/kubernetes/kubernetes/pull/137084), [@liggitt](https://github.com/liggitt)) [SIG API Machinery, Apps, Architecture, Auth, Node, Scheduling and...

   * Each OkHttpClient used to get its own instance of NullProxySelector, and because these weren't
   * equal their connections weren't pooled. That's a nasty performance bug!
   *
   * https://github.com/square/okhttp/issues/5519
   */
  @Test
  fun connectionPoolingWithFreshClientSamePool() {
    server.enqueue(MockResponse(body = "abc"))
    server.enqueue(MockResponse(body = "def"))
    server.enqueue(MockResponse(body = "ghi"))