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