code: void sampleReceived(SolverAggregatorInterface aggregator,
  			SampleMessage sample) {
  		if (!this.sampleQueue.offer(sample) && this.warnBufferFull) {
  			log.warn("Unable to insert a sample due to a full buffer.");
  		}
  	}
docs: Called when the aggregator sends a sample.  Enqueues the sample into the internal buffer.
  @param aggregator the aggregator that sent the sample.
  @param sample the sample that was sent.