Create an abstract sidebar class to avoid repetition

Modules/Core/Sidebar/AbstractAdminSidebar.php

+<?php
+
+namespace Modules\Core\Sidebar;
+
+use Maatwebsite\Sidebar\Menu;
+use Modules\Core\Events\BuildingSidebar;
+use Modules\User\Contracts\Authentication;
+use Maatwebsite\Sidebar\SidebarExtender;
+
+abstract class AbstractAdminSidebar implements SidebarExtender
+{
+    /**
+     * @var Authentication
+     */
+    protected $auth;
+
+    /**
+     * @param Authentication $auth
+     *
+     * @internal param Guard $guard
+     */
+    public function __construct(Authentication $auth)
+    {
+        $this->auth = $auth;
+    }
+
+    public function handle(BuildingSidebar $sidebar)
+    {
+        $sidebar->add($this->extendWith($sidebar->getMenu()));
+    }
+
+    /**
+     * Method used to define your sidebar menu groups and items
+     * @param Menu $menu
+     * @return Menu
+     */
+    abstract public function extendWith(Menu $menu);
+}