https://api.drupal.org/api/drupal/core%21modules%21user%21src%21Plugin%21migrate%21process%21d6%21ProfileFieldOptionTranslation.php/8.9.x
ProfileFieldOptionTranslation.php | Drupal API
phpdrupalapi
https://api.drupal.org/api/drupal/core%21modules%21user%21src%21Plugin%21migrate%21source%21d6%21ProfileFieldOptionTranslation.php/class/ProfileFieldOptionTranslation/9
class ProfileFieldOptionTranslation | Drupal API
classdrupalapi