userPolicyMappingsFile: `{
  "foo": {
    "version": 0,
    "policy": "readwrite",
    "updatedAt": "2024-04-23T21:34:43.815519816Z"
  }
}
`,
		// Contains:
		//
		// 1. duplicate mapping with same policy, we should not error out;
		//
		// 2. non-LDAP group mapping, we should not error out;
		groupPolicyMappingsFile: `{
    "cn=project.c,ou=groups,ou=swengg,DC=min,dc=io": {
        "version": 0,

    while (keys.hasNext()) {
      K key = keys.next();
      builder.put(key, valueFunction.apply(key));
    }
    // Using buildKeepingLast() so as not to fail on duplicate keys
    return builder.buildKeepingLast();
  }

  /**
   * Returns a map with the given {@code values}, indexed by keys derived from those values. In

    while (keys.hasNext()) {
      K key = keys.next();
      builder.put(key, valueFunction.apply(key));
    }
    // Using buildKeepingLast() so as not to fail on duplicate keys
    return builder.buildKeepingLast();
  }

  /**
   * Returns a map with the given {@code values}, indexed by keys derived from those values. In

### SIG Storage

- The AllowedTopologies field inside StorageClass is now validated against set and map semantics. Specifically, there cannot be duplicate TopologySelectorTerms, MatchLabelExpressions keys, or TopologySelectorLabelRequirement Values. ([#66843](https://github.com/kubernetes/kubernetes/pull/66843), [@verult](https://github.com/verult))

- EndpointSlice controllers are less likely to create duplicate EndpointSlices. ([#100103](https://github.com/kubernetes/kubernetes/pull/100103), [@robscott](https://github.com/robscott)) [SIG Apps and Network]

	c.Assert(err, nil)
	// execute the HTTP request.
	response3, err := s.client.Do(request)
	c.Assert(err, nil)
	c.Assert(response3.StatusCode, http.StatusOK)

	// The reason to duplicate this structure here is to verify if the
	// unmarshalling works from a client perspective, specifically
	// while unmarshalling time.Time type for 'Initiated' field.

- The metric `apiserver_flowcontrol_request_concurrency_limit` has been deprecated and will be removed in a future release.  It is a duplicate of `apiserver_flowcontrol_nominal_limit_seats` (introduced in release 1.26) but has an outdated name and had an outdated HELP string. ([#118959](https://github.com/kubernetes/kubernetes/pull/118959), [@MikeSpreitzer](https://github.com/MikeSpreitzer))...

- Improvements were made to `kubeadm reset` related to cleaning  etcd and notifying the user about the state of iptables.
- kubeadm commands now print warnings if input YAML documents contain unknown or duplicate fields.
- kubeadm now properly recognizes Docker 18.09.0 and newer, but still treats 18.06 as the default supported version.
- kubeadm now automatically sets the `--pod-infra-container-image` flag when starting the kubelet.

- Kubeadm: improve the strict parsing of user YAML/JSON configuration files. Next to printing warnings for unknown and duplicate fields (current state), also print warnings for fields with incorrect case sensitivity - e.g. `controlPlaneEndpoint` (valid), `ControlPlaneEndpoint` (invalid). Instead of only printing warnings during `init` and `join` also print warnings when downloading...

// converts names to upper case, and rewrites _ into Pad_godefs_n,
// so that all fields are exported.
func godefsFields(fld []*ast.Field) {
	prefix := fieldPrefix(fld)

	// Issue 48396: check for duplicate field names.
	if prefix != "" {
		names := make(map[string]bool)
	fldLoop:
		for _, f := range fld {
			for _, n := range f.Names {
				name := n.Name
				if name == "_" {
					continue