code: @Override
      public PostCommentReplyResult postCommentReply(PostCommentReplyRequest request) {
          request = beforeClientExecution(request);
          return executePostCommentReply(request);
      }
docs: <p>
  Posts a comment in reply to an existing comment on a comparison between commits or a pull request.
  </p>
  
  @param postCommentReplyRequest
  @return Result of the PostCommentReply operation returned by the service.
  @throws ClientRequestTokenRequiredException
  A client request token is required. A client request token is an unique, client-generated idempotency
  token that when provided in a request, ensures the request cannot be repeated with a changed parameter.
  If a request is received with the same parameters and a token is included, the request will return
  information about the initial request that used that token.
  @throws InvalidClientRequestTokenException
  The client request token is not valid.
  @throws IdempotencyParameterMismatchException
  The client request token is not valid. Either the token is not in a valid format, or the token has been
  used in a previous request and cannot be re-used.
  @throws CommentContentRequiredException
  The comment is empty. You must provide some content for a comment. The content cannot be null.
  @throws CommentContentSizeLimitExceededException
  The comment is too large. Comments are limited to 1,000 characters.
  @throws CommentDoesNotExistException
  No comment exists with the provided ID. Verify that you have provided the correct ID, and then try again.
  @throws CommentIdRequiredException
  The comment ID is missing or null. A comment ID is required.
  @throws InvalidCommentIdException
  The comment ID is not in a valid format. Make sure that you have provided the full comment ID.
  @sample AWSCodeCommit.PostCommentReply
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/codecommit-2015-04-13/PostCommentReply" target="_top">AWS
  API Documentation</a>