def unlink_target
import bend-collections@1.0.0.0/src/containers/balanced_search_tree.bend as BalancedSearchTreeimport Base
1750def unlink_target(~K: Data, ~V: Data, ~cmp: K -> K -> Cmp, r: TreeMap<K, V, cmp> & Nat) -> TreeMap<K, V, cmp>:
1751 (m, id) = r
1752 refresh_ends(~K, ~V, ~cmp, unlink(~K, ~V, ~cmp, m, id))