name:             "Ratcheting, For creation, FG disabled, no OptionalOldSelf, no field drop",
			enableRatcheting: false,
			crd:              &apiextensions.CustomResourceDefinition{},
			oldCRD:           nil,
			expectedCRD:      &apiextensions.CustomResourceDefinition{},
		},
		{
			name:             "Ratcheting, For creation, FG disabled, set OptionalOldSelf, drop OptionalOldSelf",
			enableRatcheting: false,

	Reason            *v1.FieldValueErrorReason `json:"reason,omitempty"`
	FieldPath         *string                   `json:"fieldPath,omitempty"`
	OptionalOldSelf   *bool                     `json:"optionalOldSelf,omitempty"`
}

// ValidationRuleApplyConfiguration constructs an declarative configuration of the ValidationRule type for use with
// apply.

	Reason            *v1beta1.FieldValueErrorReason `json:"reason,omitempty"`
	FieldPath         *string                        `json:"fieldPath,omitempty"`
	OptionalOldSelf   *bool                          `json:"optionalOldSelf,omitempty"`
}

// ValidationRuleApplyConfiguration constructs an declarative configuration of the ValidationRule type for use with
// apply.

						{Rule: "self >= oldSelf.value()", OptionalOldSelf: ptr.To(true)},
						{Rule: "self >= oldSelf.orValue(1)", OptionalOldSelf: ptr.To(true)},
						{Rule: "oldSelf.hasValue() ? self >= oldSelf.value() : true", OptionalOldSelf: ptr.To(true)},
						{Rule: "self >= oldSelf", OptionalOldSelf: ptr.To(true)},
						{Rule: "self >= oldSelf.orValue('')", OptionalOldSelf: ptr.To(true)},
					},
				},
			},

            "message": "messageValue",
            "messageExpression": "messageExpressionValue",
            "reason": "reasonValue",
            "fieldPath": "fieldPathValue",
            "optionalOldSelf": true
          }
        ]
      }
    },
    "subresources": {
      "status": {},
      "scale": {
        "specReplicasPath": "specReplicasPathValue",

      x-kubernetes-preserve-unknown-fields: true
      x-kubernetes-validations:
      - fieldPath: fieldPathValue
        message: messageValue
        messageExpression: messageExpressionValue
        optionalOldSelf: true
        reason: reasonValue
        rule: ruleValue
  version: versionValue
  versions:
  - additionalPrinterColumns:
    - JSONPath: JSONPathValue
      description: descriptionValue

	//
	// May not be set unless `oldSelf` is used in `rule`.
	//
	// +featureGate=CRDValidationRatcheting
	// +optional
	OptionalOldSelf *bool `json:"optionalOldSelf,omitempty" protobuf:"bytes,6,opt,name=optionalOldSelf"`
}

// JSON represents any valid JSON value.
// These types are supported: bool, int64, float64, string, []interface{}, map[string]interface{} and nil.
type JSON struct {

	// `transition rule`.
	//
	// By default, the `oldSelf` variable is the same type as `self`.
	// When `optionalOldSelf` is true, the `oldSelf` variable is a CEL optional
	//  variable whose value() is the same type as `self`.
	// See the documentation for the `optionalOldSelf` field for details.
	//
	// Transition rules by default are applied only on UPDATE requests and are

	//
	// May not be set unless `oldSelf` is used in `rule`.
	//
	// +featureGate=CRDValidationRatcheting
	// +optional
	OptionalOldSelf *bool `json:"optionalOldSelf,omitempty" protobuf:"bytes,6,opt,name=optionalOldSelf"`
}

// JSON represents any valid JSON value.
// These types are supported: bool, int64, float64, string, []interface{}, map[string]interface{} and nil.
type JSON struct {

		dropSelectableFields(&newCRD.Spec)
	}
}

// dropOptionalOldSelfField drops field optionalOldSelf from CRD schema
func dropOptionalOldSelfField(schema *apiextensions.JSONSchemaProps) {
	if schema == nil {
		return
	}
	for i := range schema.XValidations {
		schema.XValidations[i].OptionalOldSelf = nil
	}

	if schema.AdditionalProperties != nil {