def METHOD_NAME(self):
    proxy = model.get_proxy(
        {
            "id": "banana",
            "schema": "Person",
            "properties": {
                "birthDate": ["2020-01-05", "2020-01", "2020-03", "2020"],
            },
        }
    )
    remove_prefix_dates(proxy)
    assert "2020" not in proxy.get("birthDate")
    assert "2020-01" not in proxy.get("birthDate")
    assert "2020-01-05" in proxy.get("birthDate")
    assert "2020-03" in proxy.get("birthDate")