code: public ServiceFuture<RouteInner> beginCreateOrUpdateAsync(String resourceGroupName, String routeTableName, String routeName, RouteInner routeParameters, final ServiceCallback<RouteInner> serviceCallback) {
          return ServiceFuture.fromResponse(beginCreateOrUpdateWithServiceResponseAsync(resourceGroupName, routeTableName, routeName, routeParameters), serviceCallback);
      }
docs: Creates or updates a route in the specified route table.
  
  @param resourceGroupName The name of the resource group.
  @param routeTableName The name of the route table.
  @param routeName The name of the route.
  @param routeParameters Parameters supplied to the create or update route operation.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object