CakeDC\Users\Auth\SocialAuthenticate::_map PHP Method

    protected function _map($data)
    {
        if (!($map = $this->config('mapFields'))) {
            return $data;
        }
        foreach ($map as $dst => $src) {
            $data[$dst] = $data[$src];
            unset($data[$src]);
        }
        return $data;
    }