return d.Decode(&s)
}

func ApplyJSON(s Spec, js string) error {
	// golang protobuf. Use protoreflect.ProtoMessage to distinguish from gogo
	// golang/protobuf 1.4+ will have this interface. Older golang/protobuf are gogo compatible
	// but also not used by Istio at all.
	if _, ok := s.(protoreflect.ProtoMessage); ok {
		if pb, ok := s.(proto.Message); ok {
			err := protomarshal.ApplyJSON(js, pb)
			return err
		}
	}

func DeepCopyMeshConfig(mc *meshconfig.MeshConfig) (*meshconfig.MeshConfig, error) {
	j, err := protomarshal.ToJSON(mc)
	if err != nil {
		return nil, err
	}
	nmc := &meshconfig.MeshConfig{}
	if err := protomarshal.ApplyJSON(j, nmc); err != nil {
		return nil, err
	}
	return nmc, nil
}

// EmptyMeshNetworks configuration with no networks
func EmptyMeshNetworks() meshconfig.MeshNetworks {
	return meshconfig.MeshNetworks{