/**
* Get an array of existing inline interwiki links, as a 2-D array
- * @return array (prefix => array(dbkey => 1))
+ * @return array [ prefix => [ dbkey => 1 ] ]
*/
private function getExistingInterwikis() {
$res = $this->getDB()->select( 'iwlinks', [ 'iwl_prefix', 'iwl_title' ],