private void AddConfigFile(FileSystemMock fileSystem, string name)
{
var path = new FullPath(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile))
.Combine(new RelativePath(ConfigurationDirectoryNames.LocalUserConfigurationDirectoryName));
var cfgdir = fileSystem.AddDirectories(path.Value);
cfgdir.AddFile(name, LoadConfigFile(name));
}