@Override
  public RVVException clone() {
    RVVExceptionT clone = new RVVExceptionT(previousVersion, nextVersion);
    if (received != null) {
      clone.received = new TreeSet<>(received);
    }
    return clone;
  }
checks to see if any of the received versions can be merged into the start/end version numbers
geode-core/src/main/java/org/apache/geode/internal/cache/versions/RVVExceptionT.java