code: public boolean notifyMeasurementEnding(Iterable<Measurement> measurements) throws IOException {
      println(controlLogMessageRenderer.render(new StopMeasurementLogMessage(measurements)));
      for (Measurement measurement : measurements) {
        println(String.format("I got a result! %s: %f%s%n", measurement.description(),
            measurement.value().magnitude() / measurement.weight(), measurement.value().unit()));
      }
      writer.flush();
      return shouldKeepMeasuring();
    }
docs: Report the measurements and wait for it to be ack'd by the runner.  Returns true if we should
  keep measuring, false otherwise.