question: private void destroyInternalSession ( SessionID sessionID ) { InternalSession sess = sessionAccessManager . removeInternalSession ( sessionID ) ; if ( sess != null && sess . getState ( ) != INVALID ) { signalRemove ( sess , SessionEventType . DESTROY ) ; sessionAuditor . auditActivity ( sess . toSessionInfo ( ) , AM_SESSION_DESTROYED ) ; } sessionAccessManager . removeSessionId ( sessionID ) ; }
target:  Destroy a Internal Session, whose session id has been specified.