*
* @param string[]|null $groups
*
- * @return Database
+ * @return IDatabase
*/
public function getReadConnection( array $groups = null ) {
if ( $this->forceWriteConnection ) {
/**
* @since 1.29
*
- * @return Database
+ * @return IDatabase
*/
public function getWriteConnection() {
$this->prepareForUpdates();