public void PostExecute(FileDocumentItem parent, FileDocumentItem[] result, Exception error)
        {
            try
            {
                UnsubscribeEvents();
                AdapterDispose();

                var recyclerView = (RecyclerView)View.FindViewById(Resource.Id.gridDocuments);
                if (recyclerView != null)
                {
                    var layoutManager = new LinearLayoutManager(Activity, LinearLayoutManager.Vertical, false);
                    recyclerView.SetLayoutManager(layoutManager);
                    _adapter = new FileDocumentAdapter(result);
                    recyclerView.SetAdapter(_adapter);
                    SubscribeEvents();
                }

                if (_txtNoItems != null)
                {
                    _txtNoItems.Visibility = _adapter?.ItemCount > 0 ? ViewStates.Gone : ViewStates.Visible;
                }
            }
            catch (Exception ex)
            {
                Log.Error(ex);
                error = ex;
            }
            finally
            {
                PostExecuteHandler?.Invoke(parent);
                if (error != null)
                {
                    Toast.MakeText(Activity, GetString(Resource.String.InternalError), AppSettings.ToastLength)
                    .Show();
                }
            }
        }
 private void AdapterDispose()
 {
     _adapter?.Dispose();
     _adapter = null;
 }