required.
&$apis: array of services
+'ApiTokensGetTokenTypes': use this hook to extend action=tokens with new
+token types.
+&$tokenTypes: supported token types in format 'type' => callback function
+used to retrieve this type of tokens.
+
'ArticleAfterFetchContent': after fetching content of an article from
the database
$article: the article (object) being loaded from the database
$user: user who performed the deletion
$reason: reason
+'FileTransformed': When a file is transformed and moved into storage
+$file: reference to the File object
+$thumb: the MediaTransformOutput object
+$tmpThumbPath: The temporary file system path of the transformed file
+$thumbPath: The permanent storage path of the transformed file
+
'FileUpload': When a file upload occurs
$file : Image object representing the file that was uploaded
$reupload : Boolean indicating if there was a previously another image there or not (since 1.17)