code: @Override
      public CancelCertificateTransferResult cancelCertificateTransfer(CancelCertificateTransferRequest request) {
          request = beforeClientExecution(request);
          return executeCancelCertificateTransfer(request);
      }
docs: <p>
  Cancels a pending transfer for the specified certificate.
  </p>
  <p>
  <b>Note</b> Only the transfer source account can use this operation to cancel a transfer. (Transfer destinations
  can use <a>RejectCertificateTransfer</a> instead.) After transfer, AWS IoT returns the certificate to the source
  account in the INACTIVE state. After the destination account has accepted the transfer, the transfer cannot be
  cancelled.
  </p>
  <p>
  After a certificate transfer is cancelled, the status of the certificate changes from PENDING_TRANSFER to
  INACTIVE.
  </p>
  
  @param cancelCertificateTransferRequest
  The input for the CancelCertificateTransfer operation.
  @return Result of the CancelCertificateTransfer operation returned by the service.
  @throws ResourceNotFoundException
  The specified resource does not exist.
  @throws TransferAlreadyCompletedException
  You can't revert the certificate transfer because the transfer is already complete.
  @throws InvalidRequestException
  The request is not valid.
  @throws ThrottlingException
  The rate exceeds the limit.
  @throws UnauthorizedException
  You are not authorized to perform this operation.
  @throws ServiceUnavailableException
  The service is temporarily unavailable.
  @throws InternalFailureException
  An unexpected error has occurred.
  @sample AWSIot.CancelCertificateTransfer