Doctrine的ODM可以在不声明类型的情况下引用一个文档吗？

Question

I'm using Doctrine 2.10 with Symfony 4. I can see in the documentation for Doctrine's ODM references that a referenceMany relationship can store different types of documents in references by omitting the targetDocument option:

/* @Document */
Class User
{
    /* @ReferenceMany(targetDocument="Account") */
    private accounts = [];
}

becomes

/* @Document */
Class User
{
    /* @ReferenceMany */
    private accounts = [];
}

It seems that the same can't be achieved with the referenceOne relationship. When I use referenceOne without the targetDocument option, I get a mapping exception:

Class '' does not exist

Ideally I'd like to be able to use the mappedBy and inversedBy options so that the Account document owns the relationship, and is able to reference either a User or a Company, which share some properties. The following doesn't work, but is there a way to achieve what it represents?

/* @Document */
class User
{
    /* @ReferenceMany(targetDocument="Account", mappedBy="owner") */
    private $accounts = [];
}

/* @Document */
class Company
{
    /* @ReferenceMany(targetDocument="Account", mappedBy="owner") */
    private $accounts = [];
}

/* @Document */
class Account
{
    /* @ReferenceOne(inversedBy="accounts") */
    private $owner;
}