public async Task CreateFolder(DavItem parentFolder, string folderName)
        {
            folderName = Uri.EscapeDataString(folderName);
            folderName = folderName.Replace("%28", "(");
            folderName = folderName.Replace("%29", ")");
            var uri = new Uri(parentFolder.EntityId.TrimEnd('/') + "/" + folderName, UriKind.RelativeOrAbsolute);

            var client = new WebDavClient(new Uri(Configuration.ServerUrl, UriKind.RelativeOrAbsolute), Configuration.Credential);
            await client.CreateFolder(uri);
        }