java.util.UUID UUID System.Guid System.Object java.util.UUID UUID.randomUUID() NewGuid System.Guid java.util.UUID UUID.randomUUID() java.util.UUID System.String g UUID.fromString(${g}) System.Guid Empty java.util.UUID UUID.fromString("00000000-0000-0000-0000-000000000000") Tp6afT/OOq5ZjPtIh+5sx/AznjE=SBAuNXFb2mDvbwarVc1cEamAfpEcSFiCdg7vRdFqHdPZkX0l52vLAHkQue0//Lrhi0hS+H/cKH7yL/+nmb8riN0bCBNlvGv4WKd0cR3+xzMyM64uD1qK8cHaSbezuBnrg3Op57fY+8C7g7ZrKP+/NSBbTihZupD86KgHYt/UdFA=