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