code: public Observable<LoadBalancerInner> updateTagsAsync(String resourceGroupName, String loadBalancerName, Map<String, String> tags) {
          return updateTagsWithServiceResponseAsync(resourceGroupName, loadBalancerName, tags).map(new Func1<ServiceResponse<LoadBalancerInner>, LoadBalancerInner>() {
              @Override
              public LoadBalancerInner call(ServiceResponse<LoadBalancerInner> response) {
                  return response.body();
              }
          });
      }
docs: Updates a load balancer tags.
  
  @param resourceGroupName The name of the resource group.
  @param loadBalancerName The name of the load balancer.
  @param tags Resource tags.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable for the request