SessionUtils.validSessionVerification(request, mapping);
	public ActionForward listAvailableShifts(		ActionMapping mapping,		ActionForm form,		HttpServletRequest request,		HttpServletResponse response)		throws Exception {		HttpSession session = request.getSession(false);				IUserView userView = SessionUtils.getUserView(request);		setShiftAvailableListToRequest(request, userView);		request.setAttribute(AVAILABLE_LIST, " ");		session.setAttribute(SessionConstants.AVAILABLE_INFO_SHIFT_LIST_KEY, request.getAttribute(SHIFT_LIST_ATT));		session.removeAttribute(SessionConstants.CLASS_INFO_SHIFT_LIST_KEY);				return mapping.findForward("viewAvailableShiftList");	}