DDC-3816: hydrating many-to-many relation crashes, when trying to access auto created adder with collection (instead of single entity)

[doctrinebot]

Jira issue originally created by user stomalak:

my concern

IF Doctrine\ORM\Tools\EntityGenerator::generateEntityStubMethods (auto) generates adder, which will expect the parameter to be {color:red}target entity{color}

WHY would DoctrineModule\Stdlib\Hydrator\Strategy\AllowRemoveByValue::hydrate call this very same adder, passing an {color:red}ArrayCollection{color}

auto generated code:

public function addAnotherEntity(\NameSpace\Entity\AnotherEntity $xy)
{
    $this->anotherEntity[] = $xy;
}

outline of a (quick) workaround:

public function addAnotherEntity($xy)
{
    if($xy instanceof \NameSpace\Entity\AnotherEntity)
        $this->anotherEntity[] = $xy;
    if($xy instanceof \Doctrine\Common\Collections\ArrayCollection)
        foreach($xy as $entity)
            $this->anotherEntity[] = $entity;
}

(Same goes for removing elements from any "to-many"-collection.)

my question\s

Did I miss something on my way?
Is there any way to "enable" some kind of "multi-adding"?
Is there any chance to (further) influence that adding-part with my xml declaration?

Any advice is very welcome.

Maybe I could write my own EntityGenerator. Maybe I should use a custom Hydrator. But right now it seems to me like a little inconsistency in the library.