FEATURE #1551: add method for deleting extra content

app/Handlers/Handler.php

@@ -5,6 +5,7 @@ use App\Enumerations\ModuleNamesWithIds;
 use App\Enumerations\TemplatePathsHumanReadableRootOnly;
 use App\Enumerations\WidgetTypes;
 use App\Handlers\Contracts\AppHandler;
+use App\Models\Content;
 use App\Models\User;
 
 /**
@@ -42,6 +43,11 @@ abstract class Handler implements AppHandler
         ];
     }
 
+    public static function delete(Content $content)
+    {
+        // temporarily nothing to do
+    }
+
     public static function getExtendedFormInputsEdit()
     {
         return self::getExtendedFormInputsCreate();