mapKeysReified
inline fun <K, V, L> KoneMap<out K, V>.mapKeysReified(keyReification: Reification<L>, keyEquality: Equality<L> = defaultEquality(), keyHashing: Hashing<L>? = null, keyOrder: Order<L>? = null, transform: (KoneMapEntry<K, V>) -> L, resolve: (key: L, currentValue: V, newValue: V) -> V): KoneReifiedMap<L, V>(source)