What is equal to the expiration time of skiptoken from the nextLink parameter and deltatoken from deltaLink parameter in users and contacts delta query API?
(https://docs.microsoft.com/en-us/graph/api/user-delta?view=graph-rest-1.0&tabs=http, https://docs.microsoft.com/en-us/graph/api/contact-delta?view=graph-rest-1.0&tabs=http)