Expanded class hierarchy of WritableStreamBackupFile in Backup and Migrate 5.0.x
- class \Drupal\backup_migrate\Core\File\BackupFile implements BackupFileInterface
- class \Drupal\backup_migrate\Core\File\ReadableStreamBackupFile implements BackupFileReadableInterface
- class \Drupal\backup_migrate\Core\File\WritableStreamBackupFile implements BackupFileReadableInterface, BackupFileWritableInterface
- class \Drupal\backup_migrate\Core\File\ReadableStreamBackupFile implements BackupFileReadableInterface