import { NonLeafBlock } from "https://deno.land/x/rimbu@1.2.0/list/custom/index.ts";
Parameters
other: NonLeafTree<T, C>
x/rimbu/list/custom/index.ts>NonLeafBlock#concatTree
import { NonLeafBlock } from "https://deno.land/x/rimbu@1.2.0/list/custom/index.ts";