public function updateShopGroupProduct($groupId, array $productList)
{
$result = $this->httpRaw(self::WECHAT_SHOP_GROUP_PRODUCT_UPDATE_URL . 'access_token=' . $this->getAccessToken(), ['group_id' => $groupId, 'product' => $productList]);
return isset($result['errmsg']) && $result['errmsg'] == 'success';
}