docs: def _fetch_url(url):
      """\
      Returns the content of the provided URL.
      """
      try:
          resp = urllib2.urlopen(_Request(url))
      except urllib2.URLError:
          if 'wikileaks.org' in url:
              resp = urllib2.urlopen(_Request(url.replace('wikileaks.org', 'wikileaks.ch')))
          else:
              raise
      if resp.info().get('Content-Encoding') == 'gzip':
          return gzip.GzipFile(fileobj=StringIO(resp.read())).read().decode('utf-8')
      return resp.read().decode('utf-8')