src/server/pkg/obj/tracing.go
func (o *tracingObjClient) Writer(ctx context.Context, name string) (io.WriteCloser, error) {
	span, ctx := tracing.AddSpanToAnyExisting(ctx, o.provider+".Writer", "name", name)
	if span != nil {
		defer span.Finish()
	}
	return o.Client.Writer(ctx, name)
}
func (o *tracingObjClient) Writer(ctx context.Context, name string) (io.WriteCloser, error) {
	span, ctx := tracing.AddSpanToAnyExisting(ctx, o.provider+".Writer", "name", name)
	if span != nil {
		defer span.Finish()
	}
	return o.Client.Writer(ctx, name)
}
// Writer implements the corresponding method in the Client interface