code: public ServiceFuture<RouteFilterRuleInner> createOrUpdateAsync(String resourceGroupName, String routeFilterName, String ruleName, RouteFilterRuleInner routeFilterRuleParameters, final ServiceCallback<RouteFilterRuleInner> serviceCallback) {
          return ServiceFuture.fromResponse(createOrUpdateWithServiceResponseAsync(resourceGroupName, routeFilterName, ruleName, routeFilterRuleParameters), serviceCallback);
      }
docs: Creates or updates a route in the specified route filter.
  
  @param resourceGroupName The name of the resource group.
  @param routeFilterName The name of the route filter.
  @param ruleName The name of the route filter rule.
  @param routeFilterRuleParameters Parameters supplied to the create or update route filter rule 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