'Whether deleting an Event cascades to deleting all Incidents or whether it sets NULL
- \'normal\' workflow is where an Event is created and within that various Incidents,
aso cascading the delete makes sense here ("delete everything associated with this event")
- WA COP uses Events to group existing Incidents, so here we don\'t wish to delete the Incidents if the Event is deleted
NB Changing this setting requires a DB migration'

def get_event_cascade_delete_incidents(self):

    return self.event.get('cascade_delete_incidents', True)
