docs: public Observable<Void> deleteOwnershipIdentifierAsync(String resourceGroupName, String domainName, String name) {
          return deleteOwnershipIdentifierWithServiceResponseAsync(resourceGroupName, domainName, name).map(new Func1<ServiceResponse<Void>, Void>() {
              @Override
              public Void call(ServiceResponse<Void> response) {
                  return response.body();
              }
          });
      }