public function build()
    {
        foreach ($this->modules->enabled() as $module) {
            $name = studly_case($module->getName());
            $class = 'Modules\\'.$name.'\\MenuExtenders\\SidebarExtender';

            if (class_exists($class)) {
                $extender = $this->container->make($class);

                $this->menu->add(
                    $extender->extendWith($this->menu)
                );
            }
        }
    }