src/vs/editor/contrib/indentation/indentation.ts/ReindentLinesAction/run
class ReindentLinesAction:	public run(accessor: ServicesAccessor, editor: ICodeEditor): void {
		let model = editor.getModel();
		if (!model) {
			return;
		}
		let edits = getReindentEditOperations(model, 1, model.getLineCount());
		if (edits.length > 0) {
			editor.pushUndoStop();
			editor.executeEdits(this.id, edits);
			editor.pushUndoStop();
		}
	}