public static void ExtractZipToFreshSubDirectoryAndDelete(string zipFile)
{
string outputDirectory = FileSystemExtensions.GetFileDirectoryNameFromFileName(zipFile);
FileSystemExtensions.ClearDirectory(outputDirectory);
using (var fileStream = File.OpenRead(zipFile))
{
fileStream.ExtractStreamToFileSystem(new RelativePathFileSystemWriter(outputDirectory));
}
File.Delete(zipFile);
}