return v;
if (v == null) { return null; } else { retval = v; return this; }
	    public vDescriptor Resume() {		vDescriptor v = null;		while (next < alist.length) {		    wAttrib a = alist[next++];		    if (a != null) {			v = a.get(win);			if (v != null) {			    break;			// generate value			}		    }		}		return v;	    }