public void UnloadPackFile()
        {
            PackFileService packFileService = new PackFileService(new PackFileDataBase(), null);
            var             pack0           = packFileService.Load(@"Data\CaPackFile_01.pack");
            var             pack1           = packFileService.Load(@"Data\boot.pack");

            Assert.NotNull(pack0);
            Assert.NotNull(pack1);

            Assert.AreEqual(2, packFileService.Database.PackFiles.Count);
            packFileService.UnloadPackContainer(pack0);
            Assert.AreEqual(1, packFileService.Database.PackFiles.Count);
        }