change visibility of insertion cost calc
@@ -37,7 +37,7 @@ import com.graphhopper.jsprit.core.problem.vehicle.Vehicle;
*
* @author stefan
*/
-class LocalActivityInsertionCostsCalculator implements ActivityInsertionCostsCalculator {
+public class LocalActivityInsertionCostsCalculator implements ActivityInsertionCostsCalculator {
private VehicleRoutingTransportCosts routingCosts;
