Schema: &apiextensions.JSONSchemaProps{
									Type:      "string",
									MaxLength: int64ptr(10),
									XValidations: apiextensions.ValidationRules{
										{Rule: "self == oldSelf"},
									},
								},
							},
						},
					},
				},
			},
			expectedErrors: []validationMatch{

transition rule into evaluation even when the object is first created, or if the old object is missing the value.\n\nWhen enabled `oldSelf` will be a CEL optional whose value will be `None` if there is no old value, or when the object is initially created.\n\nYou may check for presence of oldSelf using `oldSelf.hasValue()` and unwrap it after checking using `oldSelf.value()`. Check the CEL documentation for Optional types for more information: https://pkg.go.dev/github.com/google/cel-go/cel#OptionalTypes\n\nMay...

- CEL CRD validation expressions may now reference existing object state using the identifier `oldSelf`. ([#108073](https://github.com/kubernetes/kubernetes/pull/108073), [@benluddy](https://github.com/benluddy))

                type: string
                x-kubernetes-validations:
                - message: Value is immutable
                  rule: self == oldSelf
              description:
                description: Description helps describe a GatewayClass with more details.
                maxLength: 64
                type: string
              parametersRef: