*
* @since 1.28
*
- * @param string[] $groups Groups the test user should be in.
+ * @param string|string[] $groups Groups the test user should be in.
* @return TestUser
*/
public static function getTestUser( $groups = [] ) {
*
* @since 1.28
*
- * @param string[] $groups Groups the test user should be added in.
+ * @param string|string[] $groups Groups the test user should be added in.
* @return TestUser
*/
public static function getMutableTestUser( $groups = [] ) {