Created abstract structures to keep complexity and code redundancy at bay.

src/admin/clubs.php

@@ -7,6 +7,7 @@ use Joomla\CMS\MVC\Controller\BaseController;
 defined('_JEXEC') or die;
 
 JLoader::discover('Clubs', JPATH_ROOT . '/administrator/components/com_clubs/mymodels');
+JLoader::registerPrefix('AbstractClubs', JPATH_ROOT . '/administrator/components/com_clubs/abstract');
 
 $controller = BaseController::getInstance("Clubs");
 $input = Factory::getApplication()->input;