Autopilot returns the wrong custom proxy object when a previous one was registered with the same name

[Leo Arias]

We are hitting this issue on the sanity test, where we have two different custom proxy objects named LanguagePage. One is from system settings and the other is from unity.

So the object registry will have:

'LanguagePage': <class 'ubuntu_system_settings.LanguagePage'>

When we try to select the language page from unity, it is nowhere on the registry so it will return a generic custom proxy object, instead of the custom one.

[Leo Arias (elopio)]

As a workaround, one of the classes can be renamed. But we need a better solution for this. Maybe allowing a list of classes, instead of a single item as the dictionary value.