}
		}
	}
	return errs, messages
}

type FeatureValidator func(*valuesv1alpha1.Values, *v1alpha1.IstioOperatorSpec) (util.Errors, []string)

// validateFeatures check whether the config semantically make sense. For example, feature X and feature Y can't be enabled together.
func validateFeatures(values *valuesv1alpha1.Values, spec *v1alpha1.IstioOperatorSpec) (errs util.Errors, warnings []string) {