All classes that implement MigratePluginManagerInterface in Drupal 9
- class \Drupal\Tests\migrate_drupal\Unit\MigrateFieldPluginManagerTestClass
- class \Drupal\migrate\Plugin\MigrateDestinationPluginManager
- class \Drupal\migrate\Plugin\MigratePluginManager implements MigratePluginManagerInterface
- class \Drupal\migrate\Plugin\MigrateSourcePluginManager
- class \Drupal\migrate_drupal\Plugin\MigrateFieldPluginManager implements MigrateFieldPluginManagerInterface