interface PrefixTreeimport { type PrefixTree } from "https://deno.land/x/masx200_leetcode_test@10.0.3/implement-trie-prefix-tree/PrefixTree.ts"; Propertieschildren: Map<string, PrefixTree>isEnd: booleanfunction PrefixTreeimport { PrefixTree } from "https://deno.land/x/masx200_leetcode_test@10.0.3/implement-trie-prefix-tree/PrefixTree.ts"; PrefixTree(isEnd?, children?): PrefixTreeParametersoptionalisEnd = [UNSUPPORTED]optionalchildren = [UNSUPPORTED]ReturnsPrefixTree