fix: GHPullRequestReviewComment.getLine() returning -1

[Anonycoders]

Description

• Fixes GHPullRequestReviewComment.getLine() always returns -1 #2106

• Add refresh() method to fetch complete comment data from the API
• Document the GitHub API limitation affecting line-related fields

Problem

When fetching review comments through review.listReviewComments(), the getLine() method always returns -1. This is because the GitHub API endpoint
/repos/{owner}/{repo}/pulls/{pull_number}/reviews/{review_id}/comments does not return line, original_line, side, and related fields.

Solution

1. Added refresh() method - Implements Refreshable interface, allowing users to fetch complete comment data:

comment.refresh();
int line = comment.getLine(); // Now returns actual value

2. Added documentation - Javadoc on getLine(), getSide(), and related methods explaining when -1/UNKNOWN is returned.
3. Recommended workaround - Use pullRequest.listReviewComments() instead, which returns complete data.

Before submitting a PR:

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• Add JavaDocs and other comments explaining the behavior.
• When adding or updating methods that fetch entities, add @link JavaDoc entries to the relevant documentation on https://docs.github.com/en/rest .
• Add tests that cover any added or changed code. This generally requires capturing snapshot test data. See CONTRIBUTING.md for details.
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• Push your changes to a branch other than main. You will create your PR from that branch.

When creating a PR:

• Fill in the "Description" above with clear summary of the changes. This includes:
  • If this PR fixes one or more issues, include "Fixes #" lines for each issue.
  • Provide links to relevant documentation on https://docs.github.com/en/rest where possible. If not including links, explain why not.
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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.02%. Comparing base (36f0922) to head (f1983f3).

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #2188   +/-   ##
=========================================
  Coverage     85.01%   85.02%           
- Complexity     2495     2496    +1     
=========================================
  Files           237      237           
  Lines          7355     7357    +2     
  Branches        388      388           
=========================================
+ Hits           6253     6255    +2     
  Misses          871      871           
  Partials        231      231           

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[bitwiseman]

@Anonycoders Great catch here!

The comments on the methods and the test showing working behavior are good.

However, your comments also make it clear this is a behavior is truly bizarre and likely to cause confusion downstream (even with your comments).

I'd like you to consider a couple other options:

Option 1: Return classes that match the records

• Add a new class GHPullRequestReview#CommentListItem that contains only the fields present on the records returned by GHPullRequestReview#listReviewComments()
• Add a method to GHPullRequestReview#CommentListItem named pubilc GHPullRequestReviewComment readPullRequestReviewComment() that fetches the full GHPullRequestReviewComment
• Change GHPullRequestReview#listReviewComments() return PagedIterable<GHPullRequestReview#CommentListItem>
  ** This would make it instantly clear that the endpoint is returning limited information
  ** This is a breaking change, but 2.0 is still not final. We'd need to do an added step or two to merge the change.
• Keep your comments with some modification, people will still need them

Option 2: Auto-refresh incomplete records, hiding the bad behavior

• add a field (internal) bool incomplete; to GHPullRequestReviewComment.
• add a method private void refreshIncomplete() { if (incomplete) { refresh(); incomplete = false; }
• add call to refreshIncomplete() to getters for all fields not returned as part of GHPullRequestReview#listReviewComments()
  ** Pro: Non-breaking change and quietly works around confusing behavior
  ** Con: Adds stealth REST API calls, allows users to implement potentially expensive/suboptimal behavior without being aware of the expense
• Keep your comments with some modification, people will still need them

I think I'd prefer Option 1, it's clear and makes expensive behavior visible.

Here's the GHPullRequestReview#CommentListItem records:
https://github.com/Anonycoders/github-api/blob/f1983f3b51849ad707d5c35ad12b3b9719df91e7/src/test/resources/org/kohsuke/github/GHPullRequestTest/wiremock/pullRequestReviews/__files/9-r_h_g_pulls_482_reviews_2121304234_comments.json

And here's the full GHPullRequestReviewComment:
https://github.com/Anonycoders/github-api/blob/f1983f3b51849ad707d5c35ad12b3b9719df91e7/src/test/resources/org/kohsuke/github/GHPullRequestTest/wiremock/pullRequestReviews/__files/13-r_h_g_pulls_comments_1641771497.json