docs: public Observable<Page<IntegrationAccountAgreementInner>> listByIntegrationAccountsNextAsync(final String nextPageLink) {
          return listByIntegrationAccountsNextWithServiceResponseAsync(nextPageLink)
              .map(new Func1<ServiceResponse<Page<IntegrationAccountAgreementInner>>, Page<IntegrationAccountAgreementInner>>() {
                  @Override
                  public Page<IntegrationAccountAgreementInner> call(ServiceResponse<Page<IntegrationAccountAgreementInner>> response) {
                      return response.body();
                  }
              });
      }