code: private void awc_clearOrCreateWindow(String name){
        CursorWindow win = getWindow();
        if( win==null ){
          win = new CursorWindow(name);
          setWindow(win);
        }else{
          win.clear();
        }
      }
docs: /*
  * The AbstractWindowClass contains protected methods clearOrCreateWindow() and
  * closeWindow(), which are used by the android.database.sqlite.* version of this
  * class. But, since they are marked with "@hide", the following replacement
  * versions are required.