*aMatchSet = NS_STATIC_CAST(MatchSet*, PL_HashTableLookup(mResources, aResource));
*aMatchSet = NS_STATIC_CAST(MatchSet*, PL_HashTableLookup(mMatches, &aKey));
ConflictSet::GetMatches(nsIRDFResource* aResource, MatchSet** aMatchSet){    *aMatchSet = NS_STATIC_CAST(MatchSet*, PL_HashTableLookup(mResources, aResource));}