code: public CertificateBundle getCertificate(String vaultBaseUrl, String certificateName, String certificateVersion) {
          return getCertificateWithServiceResponseAsync(vaultBaseUrl, certificateName, certificateVersion).toBlocking().single().body();
      }
docs: Gets information about a certificate.
  Gets information about a specific certificate. This operation requires the certificates/get permission.
  
  @param vaultBaseUrl The vault name, for example https://myvault.vault.azure.net.
  @param certificateName The name of the certificate in the given vault.
  @param certificateVersion The version of the certificate.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @throws KeyVaultErrorException thrown if the request is rejected by server
  @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
  @return the CertificateBundle object if successful.