/** * Get an array of previous titles for the record. * * @return array */ public function getPreviousTitles() { // If the MARC links are being used, return blank array $fieldsNames = isset($this->mainConfig->Record->marc_links) ? array_map('trim', explode(',', $this->mainConfig->Record->marc_links)) : []; return in_array('780', $fieldsNames) ? [] : parent::getPreviousTitles(); }