nbtAddress.firstCalledName(); // Initialize calledName
        assertEquals(NbtAddress.SMBSERVER_NAME, nbtAddress.nextCalledName(mockContext));
    }

    @Test
    void testNextCalledName_SmbServerName_NameType0x1D() throws UnknownHostException {
        // Test nextCalledName when calledName is SMBSERVER_NAME and nameType is 0x1D
        when(mockContext.getNameServiceClient()).thenReturn(mockNameServiceClient);