ISTWCMS-5638: Adding interface for list style plugin, and removing empty methods we don't need.

src/Plugin/CKEditorPlugin/ListStylePlugin.php

@@ -3,31 +3,18 @@
 namespace Drupal\uw_ckeditor_plugins\Plugin\CKEditorPlugin;
 
 use Drupal\ckeditor\CKEditorPluginBase;
+use Drupal\ckeditor\CKEditorPluginContextualInterface;
 use Drupal\editor\Entity\Editor;
 
 /**
- * Defines the "find" plugin.
+ * Defines the "List Style" plugin.
  *
  * @CKEditorPlugin(
  *   id = "liststyle",
- *   label = @Translation("List Style"),
+ *   label = @Translation("List Style")
  * )
  */
-class ListStylePlugin extends CKEditorPluginBase {
-
-  /**
-   * {@inheritdoc}
-   */
-  public function getDependencies(Editor $editor) {
-    return [];
-  }
-
-  /**
-   * {@inheritdoc}
-   */
-  public function getLibraries(Editor $editor) {
-    return [];
-  }
+class ListStylePlugin extends CKEditorPluginBase implements CKEditorPluginContextualInterface {
 
   /**
    * {@inheritdoc}
@@ -62,13 +49,6 @@ class ListStylePlugin extends CKEditorPluginBase {
     return $enabled;
   }
 
-  /**
-   * {@inheritdoc}
-   */
-  public function isInternal() {
-    return FALSE;
-  }
-
   /**
    * {@inheritdoc}
    */