public async Task SendToGroup(SendToGroup webPubSubEvent)
 {
     var content     = RequestContent.Create(webPubSubEvent.Message);
     var contentType = Utilities.GetContentType(webPubSubEvent.DataType);
     await _client.SendToGroupAsync(webPubSubEvent.Group, content, contentType, webPubSubEvent.Excluded).ConfigureAwait(false);
 }