public void writeRVVGC(LocalRegion region) {
    if (getFlags().contains(DiskRegionFlag.IS_WITH_VERSIONING)) {
      getDiskStore().writeRVVGC(this, region);
    }
  }
Record that we have done tombstone garbage collection to disk. On recovery or compaction, we
will discard tombstones less than the GC RVV.
geode-core/src/main/java/org/apache/geode/internal/cache/DiskRegion.java