fun oneTimeSessionUrl(targetClientId: String, redirectUri: String, callback: ResultCallback<String>): Unit
Requests a one-time session URL to be used in for example WebViews for the current user. The code expires after 60 seconds.
targetClientId - The client ID this token is intended for. Note: Will not work for other clients
redirectUri - The desired redirect to receive from /session/ when the
session represented by the code received is created.