code: def initStats(self, extras=None):
          
          url = "%s://%s:%d/%s" % (self._proto, self._host, self._port, self._monpath)
          response = util.get_url(url, self._user, self._password)
          #with open('/tmp/opcinfo.json') as f:
          #    response = f.read()
          self._statusDict = json.loads(response)
docs: Query and parse Web Server Status Page.
          
          @param extras: Include extra metrics, which can be computationally more 
                         expensive.