code: def addcomment(accountable, body):
      
  
      r = accountable.issue_add_comment(body)
      headers = sorted(['author_name', 'body', 'updated'])
      rows = [[v for k, v in sorted(r.items()) if k in headers]]
      rows.insert(0, headers)
      print_table(SingleTable(rows))
docs: Add a comment to the given issue key. Accepts a body argument to be used
      as the comment's body.