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