docs: public Observable<IntegrationAccountAgreementInner> createOrUpdateAsync(String resourceGroupName, String integrationAccountName, String agreementName, IntegrationAccountAgreementInner agreement) {
          return createOrUpdateWithServiceResponseAsync(resourceGroupName, integrationAccountName, agreementName, agreement).map(new Func1<ServiceResponse<IntegrationAccountAgreementInner>, IntegrationAccountAgreementInner>() {
              @Override
              public IntegrationAccountAgreementInner call(ServiceResponse<IntegrationAccountAgreementInner> response) {
                  return response.body();
              }
          });
      }