code: private static void init(){
  		String junittest = System.getProperty("JUNITTEST");
  		if (junittest!=null && (junittest.equalsIgnoreCase("true")))
  			return;
  		StartBuiltInProducers.startbuiltin();
  		//ensure plugins are loaded.
  		PluginRepository.getInstance();
  		//ensure accumulators are initialized.
  		AccumulatorRepository.getInstance();
  		//ensure thresholds are initialized.
  		ThresholdRepository.getInstance();
  	}
docs: Initializes the registry. If we are not in junit mode, start built-in producers.