public function clearCache($warmUp = false)
    {
        @unlink($this->cacheFileName('default.raw'));
        foreach ($this->endpointsConfig as $name => $config) {
            unset(self::$endpoints[$name]);
            @unlink($this->cacheFileName($name));
            if ($warmUp) {
                $this->initialize($name);
            }
        }
    }