@Override
  public void removePhase2() {
    Object syncObj = getDiskId();
    if (syncObj == null) {
      syncObj = this;
    }
    synchronized (syncObj) {
      super.removePhase2();
    }
  }
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