public IActionResult Get(string startPoint, string endPoint)
        {
            if (string.IsNullOrEmpty(startPoint) || string.IsNullOrEmpty(endPoint))
            {
                return(this.BadRequest("Must supply startPoint and endPoint"));
            }

            var shortestRouteList = routeFinder.CalculateShortestRoute(startPoint, endPoint);

            return(this.Ok(shortestRouteList));
        }