public async Task ExtractFileAsync_ByFileName()
        {
            using (var extractor = new SevenZipExtractor(@"TestData\multiple_files.7z"))
            {
                using (var fileStream = File.Create(TemporaryFile))
                {
                    await extractor.ExtractFileAsync("file1.txt", fileStream);
                }
            }

            Assert.AreEqual(1, Directory.GetFiles(OutputDirectory).Length);
            Assert.AreEqual("file1", File.ReadAllText(TemporaryFile));
        }