/**
  * Process an Optional Upload MIME Type selection
  *
  * @since 1.40
  *
  * @param	intger	MLA Optional Upload MIME Type ID
  *
  * @return	array	'message' => status/error messages, 'body' => tab content
  */
 private static function _process_optional_upload_mime($ID)
 {
     $optional_type = MLAMime::mla_get_optional_upload_mime($ID);
     $optional_type['disabled'] = false;
     if (false === ($upload_type = MLAMime::mla_get_upload_mime($optional_type['slug']))) {
         $optional_type['icon_type'] = '.none.';
         return MLAMime::mla_add_upload_mime($optional_type);
     }
     $optional_type['original_slug'] = $optional_type['slug'];
     return MLAMime::mla_update_upload_mime($optional_type);
 }