public List<String> getPage(int id, int db, String key, int start, int end) {
IsKeyExist command1 = new IsKeyExist(id, db, key);
command1.execute();
if(!command1.isExist())
throw new KeyNotExistException(id, db, key);
ListSetPage command = new ListSetPage(id, db, key, start, end);
command.execute();
return command.getPage();
}