def METHOD_NAME(self):
    with patch("cura.CuraApplication.CuraApplication.getInstance", MagicMock(return_value=self._application)):
        assert self._container_manager.getContainerMetaDataEntry("test", "test_data") == "omg"
        assert self._container_manager.getContainerMetaDataEntry("test", "entry_that_is_not_defined") == ""