public async Task <IActionResult> Edit(Guid tLevelId, EditTLevel.Command command) => await _mediator.SendAndMapResponse( command, response => response.Match <IActionResult>( errors => this.ViewFromErrors("EditTLevel", errors), success => RedirectToAction(nameof(CheckAndPublish), new { tLevelId }) .WithJourneyInstanceUniqueKey(_journeyInstance)));