command1.execute();
if(!command1.isExist())
throw new KeyNotExistException(id, db, key);
ListSet command = new ListSet(id, db, key);
command.execute();
return command.getValues();
}
public void remove(int id, int db, String key, Set<String> values) {
RemoveSet command = (RemoveSet) new RemoveSetFactory(id, db, key, values).getCommand();
command.execute();