static String getType1Message(final String host, final String domain) {
        // For compatibility reason do not include domain and host in type 1 message
        //return new Type1Message(domain, host).getResponse();
        return TYPE_1_MESSAGE;
    }
Creates the first message (type 1 message) in the NTLM authentication
sequence. This message includes the user name, domain and host for the
authentication session.

@param host
           the computer name of the host requesting authentication.
@param domain
           The domain to authenticate with.
@return String the message to add to the HTTP request header.
httpclient5/src/main/java/org/apache/hc/client5/http/impl/auth/NTLMEngineImpl.java