Can't use method from a controller class

I'm trying to structure my Express.js code however I'm running into a problem trying to use my class method from the controller.

Heres what it looks like:

product.service.ts

export class ProductService {
  constructor(private readonly model: Model<ProductType>) {}

  public getAllProducts = () => {
    return this.model.find({});
  };
}

product.controller.ts

export class ProductController {
  constructor(private readonly service: ProductService) {}

  public getProducts = async (req: Request, res: Response) => {
    const response: ProductType[] = await this.service.getAllProducts();
    res.send(response);
  };
}

products.router.ts

import express, { Router } from 'express';
import { ProductController } from '../controllers/product.controller';

const router: Router = express.Router();

router.get('/', ProductController.getProducts);

The problem is in my products.router.ts, it keeps saying

Property 'getProducts' does not exist on type 'typeof ProductController'.ts(2339)

Could anyone advise me what I'm doing wrong?

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