Persistable_datanucleusVersionTimestamp Contributes the value of the version (introduced by enhancing, and used by the ORM for optimistic locking) as a property. Only visible if the version can be cast to a java.sql.Timestamp . API Persistable_datanucleusVersionTimestamp.java class Persistable_datanucleusVersionTimestamp { java.sql.Timestamp prop() boolean hideProp() }