docs: public GetRouteResponse getRoute(String routeTableId, String vpcId) {
          GetRouteRequest request = new GetRouteRequest();
          if (Strings.isNullOrEmpty(vpcId) && Strings.isNullOrEmpty(routeTableId)) {
              throw new IllegalArgumentException("routeTableId and vpcId should not be empty at the same time");
          }
          else if (!Strings.isNullOrEmpty(routeTableId)) {
              request.withRouteTableId(routeTableId);
          }
          else if (!Strings.isNullOrEmpty(vpcId)) {
              request.withVpcId(vpcId);
          }
          return getRoutes(request);
      }