when(nameServiceClient.getNbtByName(host, type, scope, svr)).thenReturn(expectedAddress);

        // Act
        NetbiosAddress actualAddress = nameServiceClient.getNbtByName(host, type, scope, svr);

        // Assert
        assertNotNull(actualAddress);
        assertEquals(expectedAddress, actualAddress);
        verify(nameServiceClient, times(1)).getNbtByName(host, type, scope, svr);
    }

    @Test

        // When/Then - Should throw UnknownHostException quickly due to short timeouts
        UnknownHostException exception = assertThrows(UnknownHostException.class, () -> {
            nameServiceClient.getNbtByName("NONEXISTENT-FAST-FAIL");
        }, "Should throw UnknownHostException for non-existent NetBIOS name");

        // Verify the exception message indicates name resolution failure

    }

    @Override
    public NbtAddress getNbtByName(final String host) throws UnknownHostException {
        return getNbtByName(host, 0x00, null);
    }

    @Override
    public NbtAddress getNbtByName(final String host, final int type, final String scope) throws UnknownHostException {
        return getNbtByName(host, type, scope, null);
    }

    @Override

     *            server to query
     * @return the resolved address
     * @throws java.net.UnknownHostException
     *             if there is an error resolving the name
     */
    NetbiosAddress getNbtByName(String host, int type, String scope, InetAddress svr) throws UnknownHostException;

    /**
     * Determines the address of a host given it's host name. NetBIOS

        if (msg != null && (msg.startsWith("NTLM ") || offerBasic && msg.startsWith("Basic "))) {
            if (this.loadBalance) {
                dc = new UniAddress(getTransportContext().getNameServiceClient().getNbtByName(this.domainController, 0x1C, null));
            } else {
                dc = getTransportContext().getNameServiceClient().getByName(this.domainController, true);
            }
            NtlmPasswordAuthentication ntlm;

                final NameServiceClient nameServiceClient = getTransportContext().getNameServiceClient();
                if (pathInfo == null || server == null) {
                    final String mb = nameServiceClient.getNbtByName(NbtAddress.MASTER_BROWSER_NAME, 0x01, null).getHostAddress();
                    dc = nameServiceClient.getByName(mb);
                } else {
                    dc = nameServiceClient.getByName(server, possibleWorkgroup);

                    }
                } else if (host.length() == 0) {
                    try {
                        final Address addr = this.ctx.getNameServiceClient().getNbtByName(NbtAddress.MASTER_BROWSER_NAME, 0x01, null);
                        this.addresses = new UniAddress[1];
                        this.addresses[0] = this.ctx.getNameServiceClient().getByName(addr.getHostAddress());