@Override
    public boolean isMine(String command) {
        Iterable<String> ans = Splitter.on(' ').omitEmptyStrings().split(command);
        arguments.clear();
        CollectionUtils.addAll(arguments, ans.iterator());
        if (arguments.get(0).equals(commandName)) {
            if (argumentNumber != 0 && arguments.size() != argumentNumber) {
                error = hint;
                return false;
            }
            return true;
        }
        return false;
    }