GET /repos/:owner/:repo/pulls/:number/comments

        :param pull_number: The pull request's number.

def getPullRequestComments(self, repo_user, repo_name, pull_number):
        """
        GET /repos/:owner/:repo/pulls/:number/comments

        :param pull_number: The pull request's number.
        """
        return self.api.makeRequestAllPages(
            ['repos', repo_user, repo_name,
             'pulls', str(pull_number), 'comments'])