if (aProperty == mProperty.get()) { mConflictSet.Remove(Element(aSource, aProperty, aTarget), aFirings, aRetractions);
if (0) { mConflictSet.Remove(Element(aSource, mContainer, mEmpty), aFirings, aRetractions);
RDFPropertyTestNode::Retract(nsIRDFResource* aSource,                             nsIRDFResource* aProperty,                             nsIRDFNode* aTarget,                             MatchSet& aFirings,                             MatchSet& aRetractions) const{    if (aProperty == mProperty.get()) {        mConflictSet.Remove(Element(aSource, aProperty, aTarget), aFirings, aRetractions);    }}