rem: gDS.Change(mimeSource, valueProperty, currentValue, mimeLiteral); 
add: if (currentValue) { gDS.Change(mimeSource, valueProperty, currentValue, mimeLiteral); } else { gDS.Assert(mimeSource, valueProperty, mimeLiteral, true); } 
context: function changeMIMEStuff(aMIMEString, aPropertyString, aValueString){  var mimeSource = gRDF.GetResource(aMIMEString);  var valueProperty = gRDF.GetResource(NC_RDF(aPropertyString));  var mimeLiteral = gRDF.GetLiteral(aValueString);  var currentValue = gDS.GetTarget(mimeSource, valueProperty, true);  gDS.Change(mimeSource, valueProperty, currentValue, mimeLiteral);}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/91c3955b9340f95a4e3948bc7233df2a820efcdf/overrideHandler.js/buggy/xpfe/components/prefwindow/resources/content/overrideHandler.js