code: @Override
      public ListCACertificatesResult listCACertificates(ListCACertificatesRequest request) {
          request = beforeClientExecution(request);
          return executeListCACertificates(request);
      }
docs: <p>
  Lists the CA certificates registered for your AWS account.
  </p>
  <p>
  The results are paginated with a default page size of 25. You can use the returned marker to retrieve additional
  results.
  </p>
  
  @param listCACertificatesRequest
  Input for the ListCACertificates operation.
  @return Result of the ListCACertificates operation returned by the service.
  @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.ListCACertificates