public PackageManager(
			IPluginFinder pluginFinder,
			IThemeRegistry themeRegistry,
			IPackageBuilder packageBuilder,
			IPackageInstaller packageInstaller,
			Log.ILogger logger)
		{
			_pluginFinder = pluginFinder;
			_themeRegistry = themeRegistry;
			_packageBuilder = packageBuilder;
			_packageInstaller = packageInstaller;
			_logger = logger;
		}
		public NugetLogger(Log.ILogger logger)
		{
			_logger = logger;
		}