protected function hasSubControllerActionOnForeignController($extensionName, $controllerName, $actionName)
{
$potentialControllerClassName = $this->configurationService->getResolver()->resolveFluxControllerClassNameByExtensionKeyAndAction($extensionName, $actionName, $controllerName);
$isForeign = $extensionName !== $this->extensionName;
$isValidController = class_exists($potentialControllerClassName);
return TRUE === $isForeign && TRUE === $isValidController;
}