Method countModules

/**
 * Count the modules in the given position
 *
 * @param   string   $positionName     The position to use
 * @param   boolean  $withContentOnly  Count only a modules which actually has a content
 *
 * @return  integer  Number of modules found
 *
 * @since   1.7.0
 */
public function countModules(string $positionName, bool $withContentOnly = false)
{
    if (isset(parent::$_buffer['modules'][$positionName]) && parent::$_buffer['modules'][$positionName] === false) {
        return 0;
    }
    $modules = ModuleHelper::getModules($positionName);
    if (!$withContentOnly) {
        return \count($modules);
    }
    // Now we need to count only modules which actually have a content
    $result = 0;
    $renderer = $this->loadRenderer('module');
    foreach ($modules as $module) {
        if (empty($module->contentRendered)) {
            $renderer->render($module, ['contentOnly' => true]);
        }
        if (trim($module->content) !== '') {
            $result++;
        }
    }
    return $result;
}