def _linemagic(cls, options, strict=False, backend=None):
        "Deprecated, not expected to be used by any current code"
        backends = None if backend is None else [backend]
        options, failure = cls._process_magic(options, strict, backends=backends)
        if failure: return
        with options_policy(skip_invalid=True, warn_on_skip=False):
            StoreOptions.apply_customizations(options, Store.options(backend=backend))
Deprecated, not expected to be used by any current code