API Set extension hook implementation visibility to protected

src/File.php

@@ -672,7 +672,7 @@ public function appCategory()
     /**
      * Should be called after the file was uploaded
      */
-    public function onAfterUpload()
+    protected function onAfterUpload()
     {
         $this->extend('onAfterUpload');
     }
@@ -750,7 +750,7 @@ protected function onAfterDelete()
         $this->updateDependantObjects();
     }
 
-    public function onAfterRevertToLive()
+    protected function onAfterRevertToLive()
     {
         // Force query of draft object and update (as source record is bound to live stage)
         if (class_exists(Versioned::class) &&

src/Folder.php

@@ -276,7 +276,7 @@ public function updateFilesystem()
     /**
      * If a write is skipped due to no changes, ensure that nested records still get asked to update
      */
-    public function onAfterSkippedWrite()
+    protected function onAfterSkippedWrite()
     {
         $this->updateChildFilesystem();
     }

src/Shortcodes/FileLinkTracking.php

@@ -106,7 +106,7 @@ public function syncLinkTracking()
     /**
      * Find HTMLText fields on {@link owner} to scrape for links that need tracking
      */
-    public function augmentSyncLinkTracking()
+    protected function augmentSyncLinkTracking()
     {
         // If owner is versioned, skip tracking on live
         if (class_exists(Versioned::class) &&
@@ -223,7 +223,7 @@ protected function toggleElementClass(DOMElement $domReference, $class, $toggle)
         }
     }
 
-    public function updateCMSFields(FieldList $fields)
+    protected function updateCMSFields(FieldList $fields)
     {
         if (!$this->owner->config()->get('show_file_link_tracking')) {
             $fields->removeByName('FileTracking');