method SortedMapNode.prototype.modifyAtRe-exportimport { SortedMapNode } from "https://deno.land/x/rimbu@0.13.5/sorted/map-custom/index.ts"; modifyAt(atKey: K, options: { ifNew?: OptLazyOr<V, Token>; ifExists?: (currentEntry: V, remove: Token) => V | Token; }): SortedMap<K, V>ParametersatKey: Koptions: { ifNew?: OptLazyOr<V, Token>; ifExists?: (currentEntry: V, remove: Token) => V | Token; }ReturnsSortedMap<K, V>