rem: if (qx.util.validator.isValidString(vIconPath) && qx.util.validator.isValidString(vIconTheme)) 
add: if (qx.util.Validation.isValidString(vIconPath) && qx.util.Validation.isValidString(vIconTheme)) 
context: proto._modifyIconAlias = function(propValue, propOldValue, propData){  var vIconPath = this.getIconPath();  var vIconTheme = this.getIconTheme();  if (qx.util.validator.isValidString(vIconPath) && qx.util.validator.isValidString(vIconTheme))  {    this.defineAlias("icons", vIconPath + QxConst.CORE_SLASH + vIconTheme);  }  else  {    this.removeAlias("icons");  };  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