$predefined_fields
$predefined_fields : array
Class Builtin
$predefined_fields : array
$all_user_fields : array
$core_fields : array
$saved_fields : array
$blacklist_fields : array
Field keys that cannot be used as metakey when add new custom field to UM Form.
Note: They are used both with function UM()->user()->is_metakey_banned()
to avoid using unsecure metakeys.
$custom_fields : array
$fields_dropdown : array