code: public Observable<ServiceResponse<Page<IntegrationAccountCertificateInner>>> listByIntegrationAccountsSinglePageAsync(final String resourceGroupName, final String integrationAccountName, final Integer top) {
          if (this.client.subscriptionId() == null) {
              throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
          }
          if (resourceGroupName == null) {
              throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
          }
          if (integrationAccountName == null) {
              throw new IllegalArgumentException("Parameter integrationAccountName is required and cannot be null.");
          }
          if (this.client.apiVersion() == null) {
              throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
          }
          return service.listByIntegrationAccounts(this.client.subscriptionId(), resourceGroupName, integrationAccountName, this.client.apiVersion(), top, this.client.acceptLanguage(), this.client.userAgent())
              .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<IntegrationAccountCertificateInner>>>>() {
                  @Override
                  public Observable<ServiceResponse<Page<IntegrationAccountCertificateInner>>> call(Response<ResponseBody> response) {
                      try {
                          ServiceResponse<PageImpl<IntegrationAccountCertificateInner>> result = listByIntegrationAccountsDelegate(response);
                          return Observable.just(new ServiceResponse<Page<IntegrationAccountCertificateInner>>(result.body(), result.response()));
                      } catch (Throwable t) {
                          return Observable.error(t);
                      }
                  }
              });
      }
docs: Gets a list of integration account certificates.
  
  ServiceResponse<PageImpl<IntegrationAccountCertificateInner>> * @param resourceGroupName The resource group name.
  ServiceResponse<PageImpl<IntegrationAccountCertificateInner>> * @param integrationAccountName The integration account name.
  ServiceResponse<PageImpl<IntegrationAccountCertificateInner>> * @param top The number of items to be included in the result.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the PagedList&lt;IntegrationAccountCertificateInner&gt; object wrapped in {@link ServiceResponse} if successful.