question: public void handleButton2Request ( RequestInvocationEvent event ) { setPageSessionAttribute ( getTrackingTabIDName ( ) , AMAdminConstants . FED_TAB_ID ) ; setPageSessionAttribute ( AMAdminConstants . PREVIOUS_TAB_ID , getTrackingTabIDName ( ) ) ; FederationViewBean vb = ( FederationViewBean ) getViewBean ( FederationViewBean . class ) ; backTrail ( ) ; passPgSessionMap ( vb ) ; vb . forwardTo ( getRequestContext ( ) ) ; }
target:  Handles page cancel request.