Method subscribe

packages/angular/src/lib/agent.spec.ts:65–73

(subscriber: AgentSubscriber)

  }

  override subscribe(subscriber: AgentSubscriber) {
    const sub = super.subscribe(subscriber);
    return {
      unsubscribe: () => {
        sub.unsubscribe();
        this.unsubscribeCount += 1;
      },
    };
  }

  emitMessages(messages: Message[]) {
    this.messages = messages;