private async Task ExecuteAsync()
        {
            IWpfTextView textView = await ServiceProvider.GetWpfTextViewAsync();

            if (textView == null)
            {
                return;
            }

            IMultiSelectionBroker multiSelection = textView.GetMultiSelectionBroker();

            if (multiSelection.HasMultipleSelections && multiSelection.AllSelections.Count > 1)
            {
                multiSelection.TryRemoveSelection(multiSelection.AllSelections[multiSelection.AllSelections.Count - 1]);
            }
        }
        private async Task ExecuteAsync()
        {
            IWpfTextView textView = await ServiceProvider.GetWpfTextViewAsync();

            if (textView == null)
            {
                return;
            }

            IMultiSelectionBroker multiSelectioBroker = textView.GetMultiSelectionBroker();

            if (multiSelectioBroker.HasMultipleSelections)
            {
                string firstSelectionValue = multiSelectioBroker.AllSelections[0].Extent.GetText();

                if (int.TryParse(firstSelectionValue, out int currentValue))
                {
                    using (ITextEdit edit = textView.TextBuffer.CreateEdit())
                    {
                        for (int i = 0; i < multiSelectioBroker.AllSelections.Count; i++)
                        {
                            multiSelectioBroker.AllSelections[i].ReplaceWith(edit, currentValue.ToString());
                            currentValue++;
                        }

                        edit.Apply();
                    }
                }
                else if (firstSelectionValue.Length == 1)
                {
                    char currentChar = firstSelectionValue[0];

                    using (ITextEdit edit = textView.TextBuffer.CreateEdit())
                    {
                        for (int i = 0; i < multiSelectioBroker.AllSelections.Count; i++)
                        {
                            multiSelectioBroker.AllSelections[i].ReplaceWith(edit, currentChar.ToString());
                            currentChar++;
                        }

                        edit.Apply();
                    }
                }
            }
        }
        private async Task ExecuteAsync()
        {
            IWpfTextView textView = await ServiceProvider.GetWpfTextViewAsync();

            if (textView == null)
            {
                return;
            }

            IMultiSelectionBroker multiSelection = textView.GetMultiSelectionBroker();

            if (!multiSelection.HasMultipleSelections)
            {
                var firstSelection = new Selection(textView.Selection.SelectedSpans[0]);
                multiSelection.SetSelection(firstSelection);
            }

            var newSelection = multiSelection.TransformSelection(multiSelection.AllSelections[multiSelection.AllSelections.Count - 1], PredefinedSelectionTransformations.MoveToNextLine);

            multiSelection.AddSelection(newSelection);
        }