Intent and use cases behind EntityManagerDecorator

[dennis-fedco]

I am having a hard time finding documentation on EntityManagerDecorator.

Can you please explain what EntityManagerDecorator is used for?
I am looking for a good typical expected use case example of using the EntityManagerDecorator.
And in particular if it has any context of being used with classes that extend EntityRepository.

I also want to add something which I think is an incorrect usage of the decorator to give you more context behind my question on understanding how to use the decorator correctly:

class DoctrineProductRepository extends EntityManagerDecorator
{
    function getProduct(int $id): Product
    {
        return $this->getRepository(Product::class)->find($id);
    }
}

// to call
$repository = new DoctrineProductRepository($this->getEntityManager());
$repository->getProduct(2); //Product entity

[beberlei]

You don't need the decorator, see how to configure custom repositories in mapping. You need a ProductRepository extends EntityRepository