How to schedule publication state programmatically?

[xtul9]

Hi, I have a (probably niche) use case - I need to set publication date of an entity within my own plugin's service.

I don't understand how to do that. I figured out that if I want to publish or un-publish an entity, I can just utilize publish service like so:

const QUIZ = 'plugin::quiz.quiz';

export default ({ strapi }: { strapi: Strapi }) => ({
  saveQuiz: withTryCatch(async (body: any): Promise<ServiceResponse<any>> => {
    const { quiz }: { quiz: Quiz } = body;

    const { publish } = strapi.plugin('publisher').service('publicationService');

    // Save the quiz
    const savedQuiz = await strapi.entityService!.create(QUIZ, { data: quiz });
    
    // Publish the quiz
    await publish(QUIZ, savedQuiz.id);
    
    // ...
  }),
});

But I've been browsing the code and I still can't figure it out.