docs: def _set_repo_urls_from_channels(self, channels):
          """
          Convert a channel into a normalized repo name including.
  
          Channels are assumed in normalized url form.
          """
          repos = []
          sys_platform = self._conda_api.get_platform()
  
          for channel in channels:
              url = '{0}/{1}/repodata.json.bz2'.format(channel, sys_platform)
              repos.append(url)
  
          return repos