rem: return qx.util.validator.isValidString(vText) ? vText.length : 0; 
add: return qx.util.Validation.isValidString(vText) ? vText.length : 0; 
context: proto.getFetchedLength = function(){  var vText = this.getResponseText(true);  return qx.util.validator.isValidString(vText) ? vText.length : 0;};
meta: 1005	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1005/cfcbb829f6fba5c885606fde737b1ad8b88fe740/QxXmlHttpTransport.js/buggy/qooxdoo/source/script/transport/QxXmlHttpTransport.js