log.logInfo("connect: Truststore is " + System.getProperty("javax.net.ssl.trustStore"));
    private InitialLdapContext connect(final String url) throws BackendException {        //  Prepare connection.        Hashtable env = new Hashtable(defaultEnv);        env.put(Context.PROVIDER_URL, url);        try {            return new InitialLdapContext(env, null);        } catch (NamingException e) {            throw new BackendException("Unable to connect to " + url, e);        }    }