public function getErrorsAsString(): string
    {
        $errors = $this->getErrors();
        if (0 === $errors->count()) {
            return '';
        }
        $message = 'found ' . $errors->count() . ' errors validating '
                   . \get_class($this->dataObject);
        foreach ($errors as $error) {
            $message .= "\n\n" . $error->getPropertyPath() . ': ' . $error->getMessage();
        }

        return $message;
    }