class NestedIntegerRe-exportimport { NestedInteger } from "https://deno.land/x/masx200_leetcode_test@7.4.4/mod.ts"; ConstructorsnewNestedInteger(value?: number)Index Signatures[k: number]: NestedIntegerPropertieslength: numberMethodsadd(elem: NestedInteger)getInteger(): number | nullgetList(): NestedInteger[]isInteger(): booleansetInteger(value: number)valueOf()[Symbol.iterator]()