Neos\ContentRepository\Eel\FlowQueryOperations\PropertyOperation::evaluate PHP Метод

    public function evaluate(FlowQuery $flowQuery, array $arguments)
    {
        if (!isset($arguments[0]) || empty($arguments[0])) {
            throw new FlowQueryException('property() does not support returning all attributes yet', 1332492263);
        } else {
            $context = $flowQuery->getContext();
            $propertyPath = $arguments[0];
            if (!isset($context[0])) {
                return null;
            }
            $element = $context[0];
            if ($propertyPath[0] === '_') {
                return ObjectAccess::getPropertyPath($element, substr($propertyPath, 1));
            } else {
                return $element->getProperty($propertyPath);
            }
        }
    }