1func GetDefaultClient() *cdn.Client {
2	ak := "your_access_key_id"
3	sk := "your_secret_key_id"
4	endpoint := "https://cdn.baidubce.com"
5	
6	// ignore error in test, but you should handle error in dev
7	client, _ := cdn.NewClient(ak, sk, endpoint)
8	return client
9}