PropertySet::Contains(nsIRDFResource* aProperty) const
MatchSet::Contains(const Rule* aRule, const Instantiation& aInstantiation) const
PropertySet::Contains(nsIRDFResource* aProperty) const{    for (PRInt32 i = mCount - 1; i >= 0; --i) {        if (mProperties[i] == aProperty)            return PR_TRUE;    }    return PR_FALSE;}