return user;
    }

    protected boolean isTargetUser(final String username) {
        if (targetUsers == null) {
            return true;
        }
        return stream(targetUsers).get(stream -> stream.anyMatch(s -> s.equals(username)));
    }

    protected int executeCommand(final String[] commands, final String username, final String password) {
        if (commands == null || commands.length == 0) {