allErrs = append(allErrs, errs...)

	return allErrs
}

// ValidateAndCompileMatchConditions validates a given webhook's matchConditions.
// This is exported for use in authz package.
func ValidateAndCompileMatchConditions(matchConditions []api.WebhookMatchCondition) (*authorizationcel.CELMatcher, field.ErrorList) {

	// compile all expressions once in validation and save the results to be used for eval later
	cm, fieldErr := apiservervalidation.ValidateAndCompileMatchConditions(matchConditions)
	if err := fieldErr.ToAggregate(); err != nil {
		return nil, err
	}
	if cm != nil {
		cm.AuthorizerType = "Webhook"
		cm.AuthorizerName = name
		cm.Metrics = am
	}

		t.Run(tt.name, func(t *testing.T) {
			featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.StructuredAuthorizationConfiguration, tt.featureEnabled)
			celMatcher, errList := ValidateAndCompileMatchConditions(tt.matchConditions)
			if len(tt.expectedErr) == 0 && len(tt.matchConditions) > 0 && len(errList) == 0 && celMatcher == nil {