public FileSystemStorageProvider(FileSystemSettings settings, IWebHelper webHelper)
        {
            var mediaPath = webHelper.MapPath("~/Media/");
            _storagePath = Path.Combine(mediaPath, settings.DirectoryName);

            var appPath = "";
            if (HostingEnvironment.IsHosted) {
                appPath = HostingEnvironment.ApplicationVirtualPath;
            }
            if (!appPath.EndsWith("/"))
                appPath = appPath + '/';
            if (!appPath.StartsWith("/"))
                appPath = '/' + appPath;

            _publicPath = appPath + "Media/" + settings.DirectoryName + "/";
        }