BP_Reply_By_Email_Extension::register_params PHP Method

    public function register_params($params)
    {
        if (!empty($params[$this->item_id_param])) {
            _doing_it_wrong(__METHOD__, 'Your "item_id_param" is already registered in RBE.  Please change your "item_id_param" to a more, unique identifier.');
            return $params;
        }
        if (!empty($this->secondary_item_id_param) && !empty($params[$this->secondary_item_id_param])) {
            _doing_it_wrong(__METHOD__, 'Your "secondary_item_id_param" is already registered in RBE.  Please change your "secondary_item_id_param" to a more, unique identifier.');
            return $params;
        }
        $params[$this->item_id_param] = false;
        if (!empty($this->secondary_item_id_param)) {
            $params[$this->secondary_item_id_param] = false;
        }
        return $params;
    }