if rt == nil {
		return []cel.EnvOption{}, nil
	}
	rtWithTypes, err := rt.WithTypeProvider(tp)
	if err != nil {
		return nil, err
	}
	return []cel.EnvOption{
		cel.CustomTypeProvider(rtWithTypes),
		cel.CustomTypeAdapter(rtWithTypes),
	}, nil
}

// WithTypeProvider returns a new DeclTypeProvider that sets the given TypeProvider