rem: aNewQuickMode = rdf.GetLiteral(aNewQuickMode || ""); var old_quickMode = ds.GetTarget(this.resource, FZ_QUICKMODE, true); if (old_quickMode) ds.Change(this.resource, FZ_QUICKMODE, old_quickMode, aNewQuickMode); 
add: aNewLink = rdf.GetLiteral(aNewLink); var old_link = ds.GetTarget(this.resource, RSS_LINK, true); if (old_link) ds.Change(this.resource, RSS_LINK, old_link, aNewLink); 
context:   set quickMode (aNewQuickMode)   {    var ds = getSubscriptionsDS(this.server);    aNewQuickMode = rdf.GetLiteral(aNewQuickMode || "");    var old_quickMode = ds.GetTarget(this.resource, FZ_QUICKMODE, true);    if (old_quickMode)      ds.Change(this.resource, FZ_QUICKMODE, old_quickMode, aNewQuickMode);    else      ds.Assert(this.resource, FZ_QUICKMODE, aNewQuickMode, true);  },
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