Issue #3472463: Place block menu_ui_get_menus() deprecated

src/Plugin/Block/SmartMenusBlock.php

@@ -11,6 +11,7 @@ use Drupal\Core\Menu\MenuLinkTreeInterface;
 use Drupal\Core\Render\Renderer;
 use Drupal\Component\Utility\Html;
 use Drupal\smartmenus\SmartmenusUtil;
+use Drupal\system\Entity\Menu;
 
 /**
  * Provides a 'SmartMenusBlock' block.
@@ -115,7 +116,7 @@ class SmartMenusBlock extends BlockBase implements ContainerFactoryPluginInterfa
     $form['smartmenus']['smartmenus_menu'] = array(
       '#type' => 'select',
       '#title' => $this->t('Menu'),
-      '#options' => menu_ui_get_menus(),
+      '#options' => Menu::loadMultiple(),
       '#description' => t('The desired menu to render as a Smartmenu.'),
       '#default_value' => $config['smartmenus_menu'] ? $config['smartmenus_menu'] : '',
       '#required' => TRUE