@Override
  public void fromData(DataInput in,
      DeserializationContext context) throws IOException, ClassNotFoundException {
    value = DataSerializer.readByteArray(in);
    objValue = EntryEventImpl.deserialize(value);
  }
Return current value regardless of whether it is serialized or deserialized: if it was
serialized than it is a byte[], otherwise it is not a byte[].
geode-core/src/main/java/org/apache/geode/internal/cache/StoreAllCachedDeserializable.java