import { MultiMapEmpty } from "https://deno.land/x/rimbu@1.0.3/multimap/custom/implementation/base.ts";
Returns
WithKeyValue<Tp, K, V>["builder"]
x/rimbu/multimap/custom/implementation/base.ts>MultiMapEmpty#toBuilder
import { MultiMapEmpty } from "https://deno.land/x/rimbu@1.0.3/multimap/custom/implementation/base.ts";