t.Run(fmt.Sprintf("%v", c.name), func(tt *testing.T) {
			client := kube.NewFakeClientWithVersion(k8sMinorVer, c.objs...)
			got, err := getServiceAccountSecret(client, c.opts)
			if err == nil {
				got.ManagedFields = nil
			}
			if c.wantErrStr != "" {
				if err == nil {
					tt.Fatalf("wanted error including %q but got none", c.wantErrStr)
				} else if !strings.Contains(err.Error(), c.wantErrStr) {

- Fixed bugs in handling of server-side apply, create, and update API requests for objects containing duplicate items in keyed lists.
  - A `create` or `update` API request with duplicate items in a keyed list no longer wipes out managedFields. Examples include env var entries with the same name, or port entries with the same containerPort in a pod spec.

- Improved memory usage of kube-apiserver by dropping`.metadata.managedFields` field that self-requested informers of kube-apiserver didn't need. ([#124667](https://github.com/kubernetes/kubernetes/pull/124667), [@linxiulei](https://github.com/linxiulei)) [SIG API Machinery]