return ConstIterator(list);
return Iterator(list);
MatchSet::Find(const Match& aMatch) const{    if (mMatches) {        List* list = NS_STATIC_CAST(List*, PL_HashTableLookup(mMatches, &aMatch));        if (list)            return ConstIterator(list);    }    else {        ConstIterator last = Last();        for (ConstIterator i = First(); i != last; ++i) {            if (*i == aMatch)                return i;        }    }    return Last();}