public Authentication getAuthentication() {
        return new AuthenticationImpl(getAuthScope(), getCredentials(), getAuthScheme());
    }

    private AuthScheme getAuthScheme() {
        final String scheme = getProtocolScheme();
        if (Constants.BASIC.equals(scheme)) {
            return new BasicScheme();
        }
        if (Constants.DIGEST.equals(scheme)) {
            return new DigestScheme();
        }

        setupEpg(_epgMap, et -> ((FileAuthentication) et).getPort(),
                (et, vl) -> ((FileAuthentication) et).setPort(DfTypeUtil.toInteger(vl)), "port");
        setupEpg(_epgMap, et -> ((FileAuthentication) et).getProtocolScheme(),
                (et, vl) -> ((FileAuthentication) et).setProtocolScheme(DfTypeUtil.toString(vl)), "protocolScheme");
        setupEpg(_epgMap, et -> ((FileAuthentication) et).getUpdatedBy(),