QueuedIterator
import type { QueuedIterator } from "https://raw.githubusercontent.com/nats-io/nats.deno/v1.28.2/nats-base-client/internal_mod.ts";
interface QueuedIterator <T> extends Dispatcher<T> {
[[Symbol.asyncIterator]](): AsyncIterator<T>;
getPending(): number;
getProcessed(): number;
getReceived(): number;
stop(err?: Error): void;
}