Private methods do not trigger `\Doctrine\ORM\Proxy->__load` (consistency issue)

Problem:

When a non-public method/property is accessed on a proxy object and the proxy was not loaded yet, it will fail on $property must not be accessed before initialization. This is particularly dangerous in case of recursive relations as you can access private properties of the same class but different instance directly and in case of clone methods.
See https://www.doctrine-project.org/projects/doctrine-orm/en/2.13/cookbook/accessing-private-properties-of-the-same-class-from-different-instance.html

Use only public methods when working with instances other than $this (even thought PHP allows you to access private properties of the same class but different instance) --> May ruin encapsulation
Explicitly trigger the proxy load by calling $object->__load before accessing private property/method