def _call(self, method, params):
url = self.base_url % {'<STR_LIT>': self.bot_token, '<STR_LIT>': method}<EOL>logger.debug("<STR_LIT>",<EOL>method, str(params))<EOL>r = self.fetch(url, payload=params)<EOL>return r.text<EOL>
Retrive the given resource.

        :param resource: resource to retrieve
        :param params: dict with the HTTP parameters needed to retrieve
            the given resource