Raven.Studio.Models.PatchModel.ClearQueryError C# (CSharp) Method

        public void ClearQueryError()
        {
            PatchScriptErrorMessage.Value = string.Empty;
            IsErrorVisible.Value = false;
        }

        public override void Execute(object parameter)
        {
            patchModel.ClearQueryError();

            AskUser.ConfirmationAsync("Patch Documents", "Are you sure you want to apply this patch to all selected documents?")
            .ContinueWhenTrueInTheUIThread(() =>
            {
                var values = patchModel.GetValues();
                if (values == null)
                {
                    return;
                }
                var request = new ScriptedPatchRequest {
                    Script = patchModel.Script.CurrentSnapshot.Text, Values = values
                };
                var selectedItems = patchModel.QueryResults.ItemSelection.GetSelectedItems();
                var commands      = new ICommandData[selectedItems.Count()];
                var counter       = 0;

                foreach (var item in selectedItems)
                {
                    commands[counter] = new ScriptedPatchCommandData
                    {
                        Patch = request,
                        Key   = item.Item.Id
                    };

                    counter++;
                }

                ApplicationModel.Database.Value.AsyncDatabaseCommands
                .BatchAsync(commands)
                .ContinueOnUIThread(t => { if (t.IsFaulted)
                                           {
                                               patchModel.HandlePatchError(t.Exception);
                                           }
                                    })
                .ContinueOnSuccessInTheUIThread(() => ApplicationModel.Database.Value
                                                .AsyncDatabaseCommands
                                                .GetAsync(patchModel.SelectedItem)
                                                .ContinueOnSuccessInTheUIThread(doc =>
                {
                    if (doc != null)
                    {
                        patchModel.OriginalDoc.SetText(doc.ToJson().ToString());
                        patchModel.NewDoc.SetText("");
                        patchModel.ShowAfterPrompt = true;
                    }
                    else
                    {
                        patchModel.OriginalDoc.SetText("");
                        patchModel.NewDoc.SetText("");
                        patchModel.ShowAfterPrompt          = true;
                        patchModel.ShowBeforeAndAfterPrompt = true;
                    }
                }));
            });
        }