Expanded class hierarchy of FeedImportMergeOverwrite in Feed Import 8
- class \Drupal\feed_import_base\FeedImportMergeField
- class \Drupal\feed_import_base\FeedImportMergeDuplicates
- class \Drupal\feed_import_base\FeedImportMergeNoDuplicates
- class \Drupal\feed_import_base\FeedImportMergeOverwrite
- class \Drupal\feed_import_base\FeedImportMergeOverwriteFast