for _, mc := range wh.MatchConditions {
			preexisting.matchConditionExpressions.Insert(mc.Expression)
		}
	}
	return preexisting
}

func findValidatingPolicyPreexistingExpressions(validatingPolicy *admissionregistration.ValidatingAdmissionPolicy) preexistingExpressions {
	preexisting := newPreexistingExpressions()
	for _, mc := range validatingPolicy.Spec.MatchConditions {

  // +optional
  repeated MatchCondition matchConditions = 6;

  // Variables contain definitions of variables that can be used in composition of other expressions.
  // Each variable is defined as a named CEL expression.
  // The variables defined here will be available under `variables` in other expressions of the policy
  // except MatchConditions because MatchConditions are evaluated before the rest of the policy.
  //

	//
	// +patchMergeKey=name
	// +patchStrategy=merge
	// +listType=map
	// +listMapKey=name
	// +optional
	MatchConditions []MatchCondition `json:"matchConditions,omitempty" patchStrategy:"merge" patchMergeKey:"name" protobuf:"bytes,6,rep,name=matchConditions"`

	// Variables contain definitions of variables that can be used in composition of other expressions.
	// Each variable is defined as a named CEL expression.

	out.ReinvocationPolicy = (*admissionregistration.ReinvocationPolicyType)(unsafe.Pointer(in.ReinvocationPolicy))
	out.MatchConditions = *(*[]admissionregistration.MatchCondition)(unsafe.Pointer(&in.MatchConditions))
	return nil
}

// Convert_v1beta1_MutatingWebhook_To_admissionregistration_MutatingWebhook is an autogenerated conversion function.

			matchConditions: []api.WebhookMatchCondition{
				{
					Expression: "has(request.resourceAttributes) && request.resourceAttributes.namespace == 'kube-system'",
				},
				{
					Expression: "request.user == 'admin'",
				},
			},
			featureEnabled: false,

	//
	// +patchMergeKey=name
	// +patchStrategy=merge
	// +listType=map
	// +listMapKey=name
	// +optional
	MatchConditions []MatchCondition `json:"matchConditions,omitempty" patchStrategy:"merge" patchMergeKey:"name" protobuf:"bytes,6,rep,name=matchConditions"`

	// Variables contain definitions of variables that can be used in composition of other expressions.
	// Each variable is defined as a named CEL expression.

  // +optional
  repeated MatchCondition matchConditions = 6;

  // Variables contain definitions of variables that can be used in composition of other expressions.
  // Each variable is defined as a named CEL expression.
  // The variables defined here will be available under `variables` in other expressions of the policy
  // except MatchConditions because MatchConditions are evaluated before the rest of the policy.
  //

	// required.
	// +optional
	Validations []Validation

	// MatchConditions is a list of conditions that must be met for a request to be validated.
	// Match conditions filter requests that have already been matched by the rules,
	// namespaceSelector, and objectSelector. An empty list of matchConditions matches all requests.
	// There are a maximum of 64 match conditions allowed.
	//

	out.ReinvocationPolicy = (*admissionregistration.ReinvocationPolicyType)(unsafe.Pointer(in.ReinvocationPolicy))
	out.MatchConditions = *(*[]admissionregistration.MatchCondition)(unsafe.Pointer(&in.MatchConditions))
	return nil
}

// Convert_v1_MutatingWebhook_To_admissionregistration_MutatingWebhook is an autogenerated conversion function.

	if err := Convert_v1alpha1_WebhookConnectionInfo_To_apiserver_WebhookConnectionInfo(&in.ConnectionInfo, &out.ConnectionInfo, s); err != nil {
		return err
	}
	out.MatchConditions = *(*[]apiserver.WebhookMatchCondition)(unsafe.Pointer(&in.MatchConditions))
	return nil
}

// Convert_v1alpha1_WebhookConfiguration_To_apiserver_WebhookConfiguration is an autogenerated conversion function.