@Override
  public void importOldObject(@Unretained(ENTRY_EVENT_OLD_VALUE) Object ov, boolean isSerialized) {
    setOldValueIsSerialized(isSerialized);
    // Defer serialization until toData is called.
    setOldValObj(ov);
  }
Assists the toString method in reporting the contents of this message
geode-core/src/main/java/org/apache/geode/internal/cache/tx/RemoteDestroyMessage.java