code: public ServiceFuture<CertificateInner> getByResourceGroupAsync(String resourceGroupName, String name, final ServiceCallback<CertificateInner> serviceCallback) {
          return ServiceFuture.fromResponse(getByResourceGroupWithServiceResponseAsync(resourceGroupName, name), serviceCallback);
      }
docs: Get a certificate.
  Get a certificate.
  
  @param resourceGroupName Name of the resource group to which the resource belongs.
  @param name Name of the certificate.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object