rem: return this._modifyLayout(); 
add: return this._modifyLayout(propValue, propOldValue, propData); 
context: proto._modifyLayoutOrder = function(propValue, propOldValue, propData){  // update layout mode  this._invalidateLayoutMode();  // call other core modifier  return this._modifyLayout();};
meta: 1005	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1005/557b9ce6e5578a04462b66ec3a38618f93a17a9b/QxBoxLayout.js/buggy/qooxdoo/source/script/widgets/QxBoxLayout.js