code: public ServiceFuture<Contacts> deleteCertificateContactsAsync(String vaultBaseUrl, final ServiceCallback<Contacts> serviceCallback) {
          return ServiceFuture.fromResponse(deleteCertificateContactsWithServiceResponseAsync(vaultBaseUrl), serviceCallback);
      }
docs: Deletes the certificate contacts for a specified key vault.
  Deletes the certificate contacts for a specified key vault certificate. This operation requires the certificates/managecontacts permission.
  
  @param vaultBaseUrl The vault name, for example https://myvault.vault.azure.net.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object