docs: public Observable<LoadBalancingRuleInner> getAsync(String resourceGroupName, String loadBalancerName, String loadBalancingRuleName) {
          return getWithServiceResponseAsync(resourceGroupName, loadBalancerName, loadBalancingRuleName).map(new Func1<ServiceResponse<LoadBalancingRuleInner>, LoadBalancingRuleInner>() {
              @Override
              public LoadBalancingRuleInner call(ServiceResponse<LoadBalancingRuleInner> response) {
                  return response.body();
              }
          });
      }