code: async function getPrFiles(prNo) {
    logger.debug(`getPrFiles(${prNo})`);
    if (!prNo) {
      return [];
    }
  
    // GET /rest/api/1.0/projects/{projectKey}/repos/{repositorySlug}/pull-requests/{pullRequestId}/changes
    const values = await utils.accumulateValues(
      `./rest/api/1.0/projects/${config.projectKey}/repos/${
        config.repositorySlug
      }/pull-requests/${prNo}/changes?withComments=false`
    );
    return values.map(f => f.path.toString);
  }
docs: Return a list of all modified files in a PR https://docs.atlassian.com/bitbucket-server/rest/6.0.0/bitbucket-rest.html