TransactionParticipants get called by the TransactionManager using their
abort callbacks, but for situations where one needs access to the Context in a deeper class, called by the participant (i.e. Managers), we now have a couple of static ThreadLocal based methods:
Context getContext()(in case your Serializable is actually an instance of org.jpos.transaction.Context)
Long getId ()
Please note returned values may be null when run outside the TM life-cycle.
Also note that the TM takes care of PAUSED transactions, setting these values on the resumed thread.
See ChangeLog - 6da5f3 for details.