Subject s = getInitiatorSubject(getTestUser(), getTestUserPassword(), getTestUserDomainRequired(), null);
        CIFSContext ctx = getContext().withCredentials(new Kerb5Authenticator(s, getTestUserDomainRequired(), getTestUser(), getTestUserPassword()));
        try ( SmbResource f = new SmbFile(getTestShareURL(), ctx) ) {
            f.exists();
        }