eZ\Publish\Core\REST\Server\Output\ValueObjectVisitor\ContentFieldValidationException::visit PHP Method

    public function visit(Visitor $visitor, Generator $generator, $data)
    {
        $generator->startObjectElement('ErrorMessage');
        $statusCode = $this->getStatus();
        $visitor->setStatus($statusCode);
        $visitor->setHeader('Content-Type', $generator->getMediaType('ErrorMessage'));
        $generator->startValueElement('errorCode', $statusCode);
        $generator->endValueElement('errorCode');
        $generator->startValueElement('errorMessage', $this->httpStatusCodes[$statusCode]);
        $generator->endValueElement('errorMessage');
        $generator->startValueElement('errorDescription', $data->getMessage());
        $generator->endValueElement('errorDescription');
        $generator->startHashElement('errorDetails');
        $generator->startList('fields');
        foreach ($data->getFieldErrors() as $fieldTypeId => $translations) {
            foreach ($translations as $languageCode => $validationErrors) {
                if (!is_array($validationErrors)) {
                    $validationErrors = [$validationErrors];
                }
                foreach ($validationErrors as $validationError) {
                    $generator->startHashElement('field');
                    $generator->startAttribute('fieldTypeId', $fieldTypeId);
                    $generator->endAttribute('fieldTypeId');
                    $generator->startList('errors');
                    $generator->startHashElement('error');
                    $generator->startValueElement('type', $validationError->getTarget());
                    $generator->endValueElement('type');
                    $translation = $validationError->getTranslatableMessage();
                    $generator->startValueElement('message', $this->translator->trans($this->translationToString($translation), $translation->values, 'repository_exceptions'));
                    $generator->endValueElement('message');
                    $generator->endHashElement('error');
                    $generator->endList('errors');
                    $generator->endHashElement('field');
                }
            }
        }
        $generator->endList('fields');
        $generator->endHashElement('errorDetails');
        if ($this->debug) {
            $generator->startValueElement('trace', $data->getTraceAsString());
            $generator->endValueElement('trace');
            $generator->startValueElement('file', $data->getFile());
            $generator->endValueElement('file');
            $generator->startValueElement('line', $data->getLine());
            $generator->endValueElement('line');
        }
        $generator->endObjectElement('ErrorMessage');
    }