code: @Override
      public UpdateTrafficPolicyCommentResult updateTrafficPolicyComment(UpdateTrafficPolicyCommentRequest request) {
          request = beforeClientExecution(request);
          return executeUpdateTrafficPolicyComment(request);
      }
docs: <p>
  Updates the comment for a specified traffic policy version.
  </p>
  
  @param updateTrafficPolicyCommentRequest
  A complex type that contains information about the traffic policy that you want to update the comment for.
  @return Result of the UpdateTrafficPolicyComment operation returned by the service.
  @throws InvalidInputException
  The input is not valid.
  @throws NoSuchTrafficPolicyException
  No traffic policy exists with the specified ID.
  @throws ConcurrentModificationException
  Another user submitted a request to create, update, or delete the object at the same time that you did.
  Retry the request.
  @sample AmazonRoute53.UpdateTrafficPolicyComment
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/route53-2013-04-01/UpdateTrafficPolicyComment"
  target="_top">AWS API Documentation</a>