@Override
  public void fromData(DataInput in) throws IOException, ClassNotFoundException {
    bytes = DataSerializer.readByteArray(in);
    name = DataSerializer.readString(in);
    identifier = in.readInt();
  }
Object used for the put() operation as key and object. The objectIdentifier is used to provide a
predetermined hashcode for the object.
geode-junit/src/main/java/org/apache/geode/internal/cache/TestObjectWithIdentifier.java