listCommentsByRepo method
Lists all comments in a repository.
API docs: https://developer.github.com/v3/issues/comments/#list-comments-on-an-issue
Implementation
Stream<IssueComment> listCommentsByRepo(RepositorySlug slug) {
return PaginationHelper(github).objects('GET',
'/repos/${slug.fullName}/issues/comments', IssueComment.fromJson);
}