function flatmapimport { flatmap } from "https://deno.land/x/fun@v2.0.0/tree.ts"; flatmap<A, I>(fati: (a: A) => Tree<I>): (ta: Tree<A>) => Tree<I>The flatmap function for Flatmappable. Type ParametersAIParametersfati: (a: A) => Tree<I>Returns(ta: Tree<A>) => Tree<I>