type messageFunc func(authenticationcel.ExpressionAccessor) (string, error)

// checkValidationRulesEvaluation checks if the validation rules evaluation results
// are valid. If the validation rules evaluation results are not valid, it returns
// an error with an optional message that was set in the validation rule.
func checkValidationRulesEvaluation(results []authenticationcel.EvaluationResult, messageFn messageFunc) error {