src/server/pkg/obj/tracing.go
func (o *tracingObjClient) Walk(ctx context.Context, prefix string, fn func(name string) error) error {
	span, ctx := tracing.AddSpanToAnyExisting(ctx, o.provider+".Walk",
		"prefix", prefix)
	defer tracing.FinishAnySpan(span)
	return o.Client.Walk(ctx, prefix, fn)
}
func (o *tracingObjClient) Walk(ctx context.Context, prefix string, fn func(name string) error) error {
	span, ctx := tracing.AddSpanToAnyExisting(ctx, o.provider+".Walk",
		"prefix", prefix)
	defer tracing.FinishAnySpan(span)
	return o.Client.Walk(ctx, prefix, fn)
}
// Walk implements the corresponding method in the Client interface