code: def browse_by_idstring(self, search_type, idstring, start=0,
                             max_items=100, full_album_art_uri=False):
          
          search = self.SEARCH_TRANSLATION[search_type]
  
          # Check if the string ID already has the type, if so we do not want to
          # add one also Imported playlist have a full path to them, so they do
          # not require the A:PLAYLISTS part first
          if idstring.startswith(search) or (search_type == 'playlists'):
              search = ""
  
          search_item_id = search + idstring
          search_uri = "#" + search_item_id
          # Not sure about the res protocol. But this seems to work
          res = [DidlResource(
              uri=search_uri, protocol_info="x-rincon-playlist:*:*:*")]
          search_item = DidlObject(
              resources=res, title='', parent_id='',
              item_id=search_item_id)
  
          # Call the base version
          return self.browse(search_item, start, max_items, full_album_art_uri)
docs: Browse (get sub-elements from) a given music library item,
          specified by a string.
  
          Args:
              search_type (str): The kind of information to retrieve. Can be
                  one of: ``'artists'``, ``'album_artists'``, ``'albums'``,
                  ``'genres'``, ``'composers'``, ``'tracks'``, ``'share'``,
                  ``'sonos_playlists'``, and ``'playlists'``, where
                  playlists are the imported file based playlists from the
                  music library.
              idstring (str): a term to search for.
              start (int): starting number of returned matches. Default 0.
              max_items (int): Maximum number of returned matches. Default 100.
              full_album_art_uri (bool): whether the album art URI should be
                  absolute (i.e. including the IP address). Default `False`.
  
          Returns:
              `SearchResult`: a `SearchResult` instance.
  
          Note:
              The maximum numer of results may be restricted by the unit,
              presumably due to transfer size consideration, so check the
              returned number against that requested.