def initStats(self, extras=None):
url = "<STR_LIT>" % (self._proto, self._host, self._port, self._monpath)<EOL>response = util.get_url(url, self._user, self._password)<EOL>self._statusDict = json.loads(response)<EOL>
Query and parse Web Server Status Page.

        @param extras: Include extra metrics, which can be computationally more 
                       expensive.