ISTWCMS-3830 Update to comments, imports.

src/Plugin/Block/ContentManagementMenuBlock.php

@@ -7,7 +7,6 @@ use Drupal\Core\Form\FormStateInterface;
 use Drupal\Core\Menu\MenuLinkTreeInterface;
 use Drupal\Core\Menu\MenuTreeParameters;
 use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
-use Drupal\Core\Url;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 
 
@@ -69,7 +68,7 @@ class ContentManagementMenuBlock extends BlockBase implements ContainerFactoryPl
               ],
               '#headers' => [
                 $this->t($primary_menu_item->link->getTitle()),
-                $this->t('Operations')
+                $this->t('Operations'),
               ],
             ];
 
@@ -237,7 +236,7 @@ class ContentManagementMenuBlock extends BlockBase implements ContainerFactoryPl
   }
 
   /**
-   * Process menu tree. Recursive function (invokes self for subtree).
+   * Process menu tree, setting key to be plugin id, and value to be title.
    *
    * @param $tree
    *   Tree to be processed, access level checked.