code: def check_issues(issues, after=None):
      
      issues = closed_issues(issues, after) if after else all_issues(issues)
      issues = sorted(issues, key=ISSUES_SORT_KEY)
  
      have_warnings = False
  
      for section, issue_group in groupby(issues, key=ISSUES_BY_SECTION):
          for issue in issue_group:
              have_warnings |= check_issue(issue, after)
  
      return have_warnings
docs: Checks issues for BEP 1 compliance.