add: return ""; 
context: function getLiteral(aSource, aProperty){  var node = gDS.GetTarget(aSource, aProperty, true);  if (node) {    node = node.QueryInterface(Components.interfaces.nsIRDFLiteral);    return node.Value;  }}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/ca1ec892e7b093ce40dd9dc3212d809a00f92889/overrideHandler.js/clean/suite/common/pref/overrideHandler.js