As an AuthToken.
Source
AuthToken asToken() { return new AuthToken() ..accessToken = accessToken ..refreshToken = refreshToken ..issueDate = issueDate ..expirationDate = expirationDate ..type = type ..resourceOwnerIdentifier = resourceOwner.id ..scopes = scope?.split(" ")?.map((s) => new AuthScope(s))?.toList() ..clientID = client.id; }