method ExtendablePromise.prototype.finallyimport { ExtendablePromise } from "https://deno.land/x/shed@v0.1.0-pre.10/index.ts"; finally(onfinally?: (() => void) | null): Promise<PromiseSettledResult<T>[]>Parametersoptionalonfinally: (() => void) | nullReturnsPromise<PromiseSettledResult<T>[]>