https://api.drupal.org/api/drupal/core%21modules%21migrate%21src%21Annotation%21MigrateSource.php/11.x
MigrateSource.php | Drupal API
phpdrupalapi
https://api.drupal.org/api/drupal/core%21modules%21migrate%21src%21Annotation%21MigrateSource.php/function/MigrateSource%3A%3AgetProviders/9
function MigrateSource::getProviders | Drupal API
functiondrupalapi
https://docs.oracle.com/en/industries/communications/billing-revenue/12.0/event-notify/event.specs/event.notification.amt.migratesource.html
event.notification.amt.migratesource.html
event notificationamthtml