private async void AttachFile()
        {
            IsBusy = true;

            var file = await _firebaseStorage.UploadFiles();

            var url = await _firebaseStorage.GetFileUrl(file);

            SendMessage(url);
            IsBusy = false;
        }
        private async void StartTest2()
        {
            IsBusy = true;

            var file = await _firebaseStorage.UploadFiles();

            var url = await _firebaseStorage.GetFileUrl(file);

            ImgTest = url;

            System.Diagnostics.Debug.WriteLine("---> url " + url);

            IsBusy = false;
        }