RemoveElement return type nullable?

Hello,
so here is issue in doctrine with LazyCollections https://github.com/doctrine/orm/issues/8739#issuecomment-1992240793
Long story short if collection is lazy and we call remove() ideally we don't want to load whole collection into memory.
This can be implemented but there is issue with return type of remove(). When calling it on lazy collection we don't know if element is within collection or not. Therefore cannot return bool true/false.
So ideally I'd change `Collection::removeElement : bool` to `Collection::removeElement : bool|null` with description that null is returned if removal cannot be confirmed (eg. lazy collection)
Does that make sense?

Start by reading the Collection::removeElement declaration and the linked Doctrine ORM discussion. Determine how lazy collections are expected to report an unconfirmed removal and whether the public return-type contract can support that behavior. Done means the contract and affected implementations have an agreed, tested behavior.

Written by the indexing model from the issue text.