docs: public Observable<CheckNameAvailabilityResultInner> checkNameAvailabilityAsync(String name) {
          return checkNameAvailabilityWithServiceResponseAsync(name).map(new Func1<ServiceResponse<CheckNameAvailabilityResultInner>, CheckNameAvailabilityResultInner>() {
              @Override
              public CheckNameAvailabilityResultInner call(ServiceResponse<CheckNameAvailabilityResultInner> response) {
                  return response.body();
              }
          });
      }