def _fetch_channels(self):
json = requests.get(self._channels_url).json()<EOL>self._channels = {c['<STR_LIT>']['<STR_LIT:code>']: c['<STR_LIT>']['<STR_LIT:name>']<EOL>for c in json['<STR_LIT>']}<EOL>
Retrieve Ziggo channel information.