https://api.drupal.org/api/drupal/core%21modules%21path%21src%21Plugin%21migrate%21source%21UrlAliasBase.php/class/UrlAliasBase/11.x
class UrlAliasBase | Drupal API
classdrupalapi
https://api.drupal.org/api/drupal/core%21modules%21path%21src%21Plugin%21migrate%21source%21UrlAliasBase.php/function/UrlAliasBase%3A%3AgetIds/10
function UrlAliasBase::getIds | Drupal API
functiondrupalapi