models/classes/runner/QtiRunnerService.php
private function getCurrentThemeId()
    {
        /** @var ThemeService $themeService */
        $themeService = $this->getServiceLocator()->get(ThemeService::SERVICE_ID);

        return $themeService->getTheme()->getId();
    }
private function getCurrentThemeId()
    {
        /** @var ThemeService $themeService */
        $themeService = $this->getServiceLocator()->get(ThemeService::SERVICE_ID);

        return $themeService->getTheme()->getId();
    }
Returns the ID of the current theme

@return string
@throws \common_exception_InconsistentData