consul connect proxy upstream query

[Pavel Chernikov]

I'm trying to find an example of using proxy upstream with a prepared query

consul connect proxy -service local-cm -upstream ...

I see the following code in flag_upstreams.go:

    if idx := strings.Index(name, "."); idx != -1 {

        typ := name[idx+1:]

        name = name[:idx]

        switch typ {

        case "", "service":

            destinationType = "service"

        case "query":

            destinationType = "prepared_query"

        default:

            return fmt.Errorf(

                "Upstream type must be blank, 'service', or 'query'. Got: %q", typ)

        }

    }

Does anybody have an example of what this -upstream syntax would look like with "query"?

Thanks!