Signs out a user from all devices. You must sign AdminUserGlobalSignOut requests with Amazon Web Services credentials. It also invalidates all refresh tokens that Amazon Cognito has issued to a user. The user's current access and ID tokens remain valid until they expire. By default, access and ID tokens expire one hour after they're issued. A user can still use a hosted UI cookie to retrieve new tokens for the duration of the cookie validity period of 1 hour.Calling this action requires developer credentials.