question: private void forceQuit ( ) { if ( stdout != null ) { stdout . close ( ) ; } try { if ( shell != null ) { shell . disconnect ( ) ; } } catch ( RuntimeException e ) { LOG . error ( e . getMessage ( ) , e ) ; } finally { shell = null ; } try { if ( session != null ) { session . disconnect ( ) ; } } catch ( RuntimeException e ) { LOG . error ( e . getMessage ( ) , e ) ; } finally { session = null ; } }
target:  Forcibly quits the session.