question: @ edu . umd . cs . findbugs . annotations . SuppressWarnings ( value = "BC_UNCONFIRMED_CAST" , justification = "Only JMXConnectionNotification instances are used." ) public void handleNotification ( Notification notification , Object handback ) { if ( handback instanceof AgentImpl ) { AgentImpl agent = ( AgentImpl ) handback ; JMXConnectionNotification jmxNotifn = ( JMXConnectionNotification ) notification ; if ( logger . isDebugEnabled ( ) ) { logger . debug ( "Connection notification for connection id : '{}'" , jmxNotifn . getConnectionId ( ) ) ; } agent . updateRmiClientsCount ( ) ; } }
target:  If the handback object passed is an AgentImpl, updates the JMX client count