/** @var IDatabase $db DB handle for the appropriate cluster/wiki */
$db = $lb->getConnection( $index, [], $wiki );
if ( $replicaDB != '' && $db->getLBInfo( 'master' ) !== null ) {
/** @var IDatabase $db DB handle for the appropriate cluster/wiki */
$db = $lb->getConnection( $index, [], $wiki );
if ( $replicaDB != '' && $db->getLBInfo( 'master' ) !== null ) {