code: public static final void reset(){
  		instance.reset();
  		String junittest = System.getProperty("JUNITTEST");
  		if (junittest!=null && junittest.equalsIgnoreCase("true"))
  			return;
  		StartBuiltInProducers.restartbuiltin();
  	}
docs: Resets the registry, useable for unit tests. Note this method doesn't stop producers from running (if the are running) hence it shouldn't be used in production environment.