ClusterKey(const ClusterKey& aKey) : mContainerVariable(aKey.mContainerVariable), mContainerValue(aKey.mContainerValue), mMemberVariable(aKey.mMemberVariable), mMemberValue(aKey.mMemberValue) {
ClusterKey(PRInt32 aContainerVariable, const Value& aContainerValue, PRInt32 aMemberVariable, const Value& aMemberValue) : mContainerVariable(aContainerVariable), mContainerValue(aContainerValue), mMemberVariable(aMemberVariable), mMemberValue(aMemberValue) {
    ClusterKey(const ClusterKey& aKey)        : mContainerVariable(aKey.mContainerVariable),          mContainerValue(aKey.mContainerValue),          mMemberVariable(aKey.mMemberVariable),          mMemberValue(aKey.mMemberValue) {        MOZ_COUNT_CTOR(ClusterKey); }