code: public String getEvaluatorDescriptorString() {
      final String descriptorString =
          Utilities.getEvaluatorDescriptorString(jallocatedEvaluator.getEvaluatorDescriptor());
      LOG.log(Level.INFO, "allocated evaluator - serialized evaluator descriptor: " + descriptorString);
      return descriptorString;
    }
docs: Gets the serialized evaluator descriptor from the Java allocated evaluator.
  @return the serialized evaluator descriptor.