List <String> groups = new ArrayList <String> ();
groups.add("Administrador");
Map <String, String> computers = new HashMap <String, String> ();
Map <String, Map<String, String>> schedule = new HashMap <String, Map<String, String>> ();
prevaylerToSave.execute(new AddAndEditClassRoom("01", "sala1", computers, schedule));
prevaylerToSave = null;
Prevayler prevaylerToRead = PrevaylerFactory.createPrevayler(new PrevalentSystem(), dataDirectory);