786   function _process_item($data_id, &$media, $offset=0) {      argument
789     $box =& $this->_layout_item($data_id, $media, $offset, $context, $postponed_filter);
792       error_log(sprintf(_('Could not fetch: %s'), (string)$data_id));
927   function &fetch($data_id) {  argument
940       $data = $this->fetchers[$i]->get_data($data_id);
949       error_log(sprintf('Could not fetch %s', $data_id));
956   function process($data_id, &$media) {  argument
957     return $this->process_batch(array($data_id), $media);
996     foreach ($data_id_array as $data_id) {      
997       $this->_process_item($data_id, $media, $offset);
1127   function &_layout_item($data_id, &$media, $offset, &$context, &$postponed_filter) {  argument
1136     $data = $this->fetch($data_id);