@Override
    public void init(LogWriter systemLogger, LogWriter securityLogger)
        throws AuthenticationFailedException {
      // nothing
    }
Use of SECURITY_CLIENT_AUTHENTICATOR should result in the servers performing authentication
during HandShake of Gateway Sender/Receiver connecting.
geode-wan/src/distributedTest/java/org/apache/geode/internal/cache/wan/GatewayLegacyAuthenticationRegressionTest.java