Как применить один плагин к заданному тексту (внутри модуля)? - Разработка расширений для Joomla 3.x

JPluginHelper::importPlugin('content');
$item->text = JHtml::_('content.prepare', $item->text);

$dispatcher = &JDispatcher::getInstance();
$dispatcher->trigger('onContentPrepare', array('com_content.article', &$item, &$item->params, 0));

$plugins = JPluginHelper::getPlugin('нужная_вам_группа');

$className = 'название_класса_вашего_плагина';
if (class_exists($className))
{
    $object = new stdClass();
    $plugin = new $className($object, array('params' => 'здесь параметры плагина либо строкой, либо JRegistry'));
    $plugin->функция_плагина(аргументы_функции);
}

JPluginHelper::importPlugin('группа_плагина');
$dispatcher = JDispatcher::getInstance();
$dispatcher->trigger('onMyNoBodyBussiness',array(&$что_нужно_менять));

$plugin = JPluginHelper::getPlugin( 'content', 'multithumb' );
$params = new JRegistry();
$params->loadString($plugin->params);

$className = 'plgContentMultithumb';
if (class_exists($className))
{
  $object = new stdClass();
  $plugin2 = new $className($object, array('params'=>$params));
  $plugin2->onContentPrepare('mod_fj_related_plus.nm', &$item, $item->params, 0);
}

        JPluginHelper::importPlugin('content');
        $dispatcher = &JDispatcher::getInstance();
        $dispatcher->trigger('onMyNoBodyBussiness123', array('mod_fj_related_plus.nm', &$item, &$item->params, 0));

        JPluginHelper::importPlugin('content');
        $dispatcher = &JDispatcher::getInstance();
        $dispatcher->trigger('onMyNoBodyBussiness123', array('mod_fj_related_plus.nm', &$item, &$item->params, 0));

return (new plgContentMultithumb)->_onPrepareContent($context, $this->prepareHTML($data), $params, $page));

[02-Feb-2016 13:11:37 Europe/Moscow] PHP Fatal error:  Call to a member function attach() on null in /var/www/xxxxxxxxxxxx/libraries/joomla/event/event.php on line 37
[02-Feb-2016 13:11:37 Europe/Moscow] PHP Stack trace:
[02-Feb-2016 13:11:37 Europe/Moscow] PHP   1. {main}() /var/www/xxxxxxxxxxxx/index.php:0
[02-Feb-2016 13:11:37 Europe/Moscow] PHP   2. JApplicationCms->execute() /var/www/xxxxxxxxxxxx/index.php:45
[02-Feb-2016 13:11:37 Europe/Moscow] PHP   3. JApplicationSite->doExecute() /var/www/xxxxxxxxxxxx/libraries/cms/application/cms.php:252
[02-Feb-2016 13:11:37 Europe/Moscow] PHP   4. JApplicationSite->dispatch() /var/www/xxxxxxxxxxxx/libraries/cms/application/site.php:231
[02-Feb-2016 13:11:37 Europe/Moscow] PHP   5. JComponentHelper::renderComponent() /var/www/xxxxxxxxxxxx/libraries/cms/application/site.php:192
[02-Feb-2016 13:11:37 Europe/Moscow] PHP   6. JComponentHelper::executeComponent() /var/www/xxxxxxxxxxxx/libraries/cms/component/helper.php:372
[02-Feb-2016 13:11:37 Europe/Moscow] PHP   7. require_once() /var/www/xxxxxxxxxxxx/libraries/cms/component/helper.php:392
[02-Feb-2016 13:11:37 Europe/Moscow] PHP   8. JControllerLegacy->execute() /var/www/xxxxxxxxxxxx/components/com_content/content.php:38
[02-Feb-2016 13:11:37 Europe/Moscow] PHP   9. ContentController->display() /var/www/xxxxxxxxxxxx/libraries/legacy/controller/legacy.php:728
[02-Feb-2016 13:11:37 Europe/Moscow] PHP  10. JControllerLegacy->display() /var/www/xxxxxxxxxxxx/components/com_content/controller.php:106
[02-Feb-2016 13:11:37 Europe/Moscow] PHP  11. ContentViewArticle->display() /var/www/xxxxxxxxxxxx/libraries/legacy/controller/legacy.php:690
[02-Feb-2016 13:11:37 Europe/Moscow] PHP  12. JEventDispatcher->trigger() /var/www/xxxxxxxxxxxx/components/com_content/views/article/view.html.php:171
[02-Feb-2016 13:11:37 Europe/Moscow] PHP  13. JEvent->update() /var/www/xxxxxxxxxxxx/libraries/joomla/event/dispatcher.php:160
[02-Feb-2016 13:11:37 Europe/Moscow] PHP  14. call_user_func_array:{/var/www/xxxxxxxxxxxx/libraries/joomla/event/event.php:69}() /var/www/xxxxxxxxxxxx/libraries/joomla/event/event.php:69
[02-Feb-2016 13:11:37 Europe/Moscow] PHP  15. plgContentrelated_item->onContentAfterDisplay() /var/www/xxxxxxxxxxxx/libraries/joomla/event/event.php:69
[02-Feb-2016 13:11:37 Europe/Moscow] PHP  16. plgContentMultithumb->plgContentMultithumb() /var/www/xxxxxxxxxxxx/plugins/content/related_item/related_item.php:38
[02-Feb-2016 13:11:37 Europe/Moscow] PHP  17. JPlugin->__construct() /var/www/xxxxxxxxxxxx/plugins/content/multithumb/multithumb.php:25
[02-Feb-2016 13:11:37 Europe/Moscow] PHP  18. JEvent->__construct() /var/www/xxxxxxxxxxxx/libraries/cms/plugin/plugin.php:119