public function listAction($category = null)
{
$criteria = ['type' => PluginTypes::TYPE_PLUGIN];
if ($category !== null) {
$criteria['category'] = $category;
}
$plugins = $this->get('elcodi.repository.plugin')->findBy($criteria, ['category' => 'ASC']);
return ['plugins' => $plugins, 'category' => $category];
}