import { MultiMapContext } from "https://deno.land/x/rimbu@0.13.1/multimap/custom/index.ts";
Returns
WithKeyValue<Tp, K, V>["builder"]
x/rimbu/multimap/custom/index.ts>MultiMapContext#createBuilder
import { MultiMapContext } from "https://deno.land/x/rimbu@0.13.1/multimap/custom/index.ts";