rem: if (qx.util.validator.isValidString(vWidgetPath) && qx.util.validator.isValidString(vWidgetTheme)) 
add: if (qx.util.Validation.isValidString(vWidgetPath) && qx.util.Validation.isValidString(vWidgetTheme)) 
context: proto._modifyWidgetAlias = function(propValue, propOldValue, propData){  var vWidgetPath = this.getWidgetPath();  var vWidgetTheme = this.getWidgetTheme();  if (qx.util.validator.isValidString(vWidgetPath) && qx.util.validator.isValidString(vWidgetTheme))  {    this.defineAlias("widgets", vWidgetPath + QxConst.CORE_SLASH + vWidgetTheme);  }  else  {    this.removeAlias("widgets");  };  return true;};
meta: 1005	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1005/cfcbb829f6fba5c885606fde737b1ad8b88fe740/QxImageManager.js/clean/qooxdoo/source/script/managers/QxImageManager.js