docs: def parse_resource_document(self, content):
          """Return a dict with the keys title, content, tags for content."""
  
          content = content.strip()
  
          if not content.startswith('<html>'):
              # this is not a full HTML doc, probably content w/o title, tags, etc
              return dict(body=content)
  
          result = {}
          if '<title>' in content and '</title>' in content:
              result['subject'] = content[content.find('<title>') + 7:content.find('</title>')].strip()
          result['body'] = content[content.find('<body>') + 6:content.find('</body>')].strip()
  
          return result