@list = $session->getAggregationEvents( $object, $eventname, $flag)
The getAggregationEvents() function gets the names of the events that are aggregated to the specified event, which must be an aggregation event type.
If $flag is false, then the events directly aggregated are returned.
If $flag is true, then the aggregation tree is walked, and the names of all nonaggregation events that the specified event ultimately depends on are returned.
@list = $session->getAggregationEvents( "Router::gw1", "PowerSupplyException", 1 );