question: private static void logSession ( final Session session ) { final TransportStrategy transportStrategy = TransportStrategy . findStrategyForSession ( session ) ; final Properties properties = session . getProperties ( ) ; final String sessionDetails = ( transportStrategy != null ) ? transportStrategy . toString ( properties ) : properties . toString ( ) ; LOGGER . debug ( "starting mail with " + sessionDetails ) ; }
target:  Simply logs host details, credentials used and whether authentication will take place and finally the transport protocol used.