void clearAll (boolean all) {
public void clearAll (boolean all) {
/*public*/ void clearAll (boolean all) {	checkWidget ();	int hwnd = parent.handle;	int hItem = OS.SendMessage (hwnd, OS.TVM_GETNEXTITEM, OS.TVGN_CHILD, handle);	if (hItem == 0) return;	TVITEM tvItem = new TVITEM ();	tvItem.mask = OS.TVIF_HANDLE | OS.TVIF_PARAM;	parent.clearAll (hItem, tvItem, all);}