eZ\Publish\Core\REST\Server\Controller\ContentType::loadContentTypeDraftFieldDefinitionList PHP Method

    public function loadContentTypeDraftFieldDefinitionList($contentTypeId)
    {
        $contentTypeDraft = $this->contentTypeService->loadContentTypeDraft($contentTypeId);
        return new Values\FieldDefinitionList($contentTypeDraft, $contentTypeDraft->getFieldDefinitions());
    }