rem: return this.ds.Change (n1, a, oldN2, n2); 
add: this.ds.Change (n1, a, oldN2, n2); 
context: function rdf_duassert (n1, a, n2){    var oldN2 = this.ds.GetTarget (n1, a, true);    if (!oldN2)    {        dd ("** Unable to change " + n1.Value + " -[" + a.Value + "]->, " +            "because old value was not found.");        return;    }        return this.ds.Change (n1, a, oldN2, n2);    }
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/1f42c13a0fedc4ccc3d8322c5a1e4bf9acc80954/cview-rdf.js/buggy/extensions/cview/resources/content/cview-rdf.js