Values.ConnectionCredentialsSourceConnection credentials.
type nonrec t = {connectionToken : ParticipantToken.t option;The connection token.
*)expiry : ISO8601Datetime.t option;The expiration of the token. It's specified in ISO 8601 format: yyyy-MM-ddThh:mm:ss.SSSZ. For example, 2019-11-08T02:41:28.172Z.
*)}