@JsonPropertyDescription(
            "The HTTP header key used to extract the distinguished name (DN) as obtained from an X509 certificate. " +
            "This is used when a load balancer does the SSL/mTLS termination and passes the client DN though " +
            "in a header. Only used for " +
            "authentication if a value is set and 'enabledAuthenticationTypes' includes CERTIFICATE.")
    public String getX509CertificateDnHeader() {
        return x509CertificateDnHeader;
    }
@return True if the passed {@link AuthenticationType} has been configured as enabled for use..
stroom-receive/stroom-receive-common/src/main/java/stroom/receive/common/ReceiveDataConfig.java