Method key

cranelift/bforest/src/map.rs:348–352

(&self, pool: &NodePool<MapTypes<K, V>>)

    }

    fn key(&self, pool: &NodePool<MapTypes<K, V>>) -> Option<K> {
        self.path
            .leaf_pos()
            .and_then(|(node, entry)| pool[node].unwrap_leaf().0.get(entry).cloned())
    }

    fn value(&self, pool: &NodePool<MapTypes<K, V>>) -> Option<V> {
        self.path