// helper methods ///////////////////////////////////////////////////////////
protected internal virtual void addActivityHandlers(ActivityImpl activity)
{
if (historyLevel.isHistoryEventProduced(HistoryEventTypes.ACTIVITY_INSTANCE_START, null))
{
activity.addBuiltInListener(PvmEvent.EVENTNAME_START, ACTIVITY_INSTANCE_START_LISTENER, 0);
}
if (historyLevel.isHistoryEventProduced(HistoryEventTypes.ACTIVITY_INSTANCE_END, null))
{
activity.addBuiltInListener(PvmEvent.EVENTNAME_END, ACTIVITY_INSTANCE_END_LISTENER);
}
}