Neos\Flow\Mvc\Controller\RestController::initializeCreateAction PHP Метод

    protected function initializeCreateAction()
    {
        $propertyMappingConfiguration = $this->arguments[$this->resourceArgumentName]->getPropertyMappingConfiguration();
        $propertyMappingConfiguration->setTypeConverterOption(PersistentObjectConverter::class, PersistentObjectConverter::CONFIGURATION_CREATION_ALLOWED, true);
        $propertyMappingConfiguration->allowAllProperties();
    }