question: private void basicDestroy ( LocalRegion region , DiskRegion dr ) { if ( dr . isBackup ( ) ) { if ( region != null ) { region . closeEntries ( ) ; } PersistentOplogSet oplogSet = getPersistentOplogSet ( dr ) ; oplogSet . basicDestroy ( dr ) ; } else { dr . freeAllEntriesOnDisk ( region ) ; if ( region != null ) { region . closeEntries ( ) ; } } }
target:  Destroy the given region