code: public ServiceFuture<CertificateBundle> importCertificateAsync(ImportCertificateRequest importCertificateRequest,
              final ServiceCallback<CertificateBundle> serviceCallback) {
          return importCertificateAsync(importCertificateRequest.vaultBaseUrl(),
                  importCertificateRequest.certificateName(), importCertificateRequest.base64EncodedCertificate(),
                  importCertificateRequest.password(), importCertificateRequest.certificatePolicy(),
                  importCertificateRequest.certificateAttributes(), importCertificateRequest.tags(), serviceCallback);
      }
docs: Imports a certificate into the specified vault.
  
  @param importCertificateRequest
  the grouped properties for importing a certificate request
  @param serviceCallback
  the async ServiceCallback to handle successful and failed
  responses.
  @return the {@link ServiceFuture} object