@Override
  public void persistConflictingTag(InternalRegion region, VersionTag tag) {
    // only persist region needs to persist conflict tag
    Helper.updateVersionOnly(this, region, tag);
    setRecentlyUsed(region);
  }
Abstract implementation class of RegionEntry interface. This is adds Disk support behavior

@since GemFire 3.5.1
geode-core/src/main/java/org/apache/geode/internal/cache/entries/AbstractOplogDiskRegionEntry.java