question: @ SuppressWarnings ( "unused" ) public void handleButton3Request ( RequestInvocationEvent event ) { backTrail ( ) ; try { String name = ( String ) getPageSessionAttribute ( SAVE_VB_NAME ) ; ViewBean vb = getViewBean ( Class . forName ( name ) ) ; passPgSessionMap ( vb ) ; vb . forwardTo ( getRequestContext ( ) ) ; } catch ( ClassNotFoundException e ) { debug . warning ( "AbstractAuditViewBean.handleButton3Request:" , e ) ; } }
target:  Called on request from the UI to return to the previous page.