@Override
  public void toData(DataOutput out,
      SerializationContext context) throws IOException {
    super.toData(out, context);
    DataSerializer.writeString(name, out);
    DataSerializer.writeString(userAttribute, out);
    DataSerializer.writeObject(exception, out);
  }
Returns any exception that was thrown while generating this response.
geode-core/src/main/java/org/apache/geode/internal/admin/remote/RegionResponse.java