FluidTYPO3\Vhs\ViewHelpers\Once\InstanceViewHelper::getIdentifier PHP Метод

    protected function getIdentifier()
    {
        if (true === isset($this->arguments['identifier']) && null !== $this->arguments['identifier']) {
            return $this->arguments['identifier'];
        }
        $request = $this->controllerContext->getRequest();
        $identifier = implode('_', [$request->getControllerActionName(), $request->getControllerName(), $request->getPluginName(), $request->getControllerExtensionName()]);
        return $identifier;
    }