public function DiscussionsController_BeforeDiscussionName_Handler(DiscussionsController $sender, $args)
	{
		foreach ($this->getAvailableDiscussionTypesPlugins() as $pluginSpec) {
			$typeName = $pluginSpec['DiscussionTypes']['Name'];
			/** @var Gdn_Model $model */
			$model = call_user_func(sprintf('DiscussionType_%sModel::instance', $typeName));
			if ($model->GetWhere(['DiscussionID' => $sender->EventArguments['Discussion']->DiscussionID])->count()) {
				$args['CssClass'] .= ' '.$pluginSpec['Index'];
			}
		}
	}