Inherited description: Called when the session is about to be deleted, either because of a timeout (in which case
OnTimeout() is called first) or because the application
has explicitly closed this session. Use the %session object to examine this session. If you wish to
abort this deletion then:
Inherited description: Called when a new session is created and its values are initialised.
This is called before the license for this session is allocated, and if
you wish to abort this session and return the standard out of licenses error