code: def retrieve_diaspora_hcard(handle):
      
      webfinger = retrieve_and_parse_diaspora_webfinger(handle)
      document, code, exception = fetch_document(webfinger.get("hcard_url"))
      if exception:
          return None
      return document
docs: Retrieve a remote Diaspora hCard document.
  
      :arg handle: Remote handle to retrieve
      :return: str (HTML document)