def neighbor
import bend-collections@1.0.0.0/src/containers/balanced_search_tree.bend as BalancedSearchTreeimport Base
1132def neighbor(~K: Data, ~V: Data, ~cmp: K -> K -> Cmp, m: TreeMap<K, V, cmp>, +id: Nat, +forward: Bool) -> TreeMap<K, V, cmp> & Nat:
1133 neighbor_node(~K, ~V, ~cmp, id, forward, read(~K, ~V, ~cmp, m, id))