rem: if (qx.util.validator.isValidString(vSource)) { 
add: if (qx.util.Validation.isValidString(vSource)) { 
context: proto._beforeAppear = function(){  var vSource = this.getSource();  if (qx.util.validator.isValidString(vSource)) {    qx.manager.object.ImageManager._sources[vSource]++;  };  return qx.ui.basic.Terminator.prototype._beforeAppear.call(this);};
meta: 1005	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1005/cfcbb829f6fba5c885606fde737b1ad8b88fe740/QxImage.js/buggy/qooxdoo/source/script/widgets/QxImage.js