Help Modeling Server Endpoints with structs

Do you think this is a reasonable way to model server endpoints? Basically I have a general endpoint, but want to specialize on payload. This seems a bit verbose to me, especially when accessing fields on the structs.

https://play.golang.org/p/VOWXI7RndCt

package main

import (
	"fmt"
)

type Endpoint struct {
	NeedsAuthentication bool
	Uri                 string
}
type RefreshEndpoint struct {
	Endpoint
	Payload RefreshPayload
}
type RefreshPayload struct {
	RefreshToken string
}

func main() {
	refreshEndpoint := RefreshEndpoint{Endpoint: Endpoint{NeedsAuthentication: true, Uri: "/foo"}, Payload: RefreshPayload{RefreshToken: "xxx"}}
	fmt.Printf("The uri is: %s, the access token is: %s", refreshEndpoint.Endpoint.Uri, refreshEndpoint.Payload.RefreshToken)
}

One way around the odd indirectness of refreshEndpoint.Endpoint.Uri is to define a method called Uri on RefreshEndpoint:

package main

import (
	"fmt"
)

type Endpoint struct {
	NeedsAuthentication bool
	Uri                 string
}
type RefreshEndpoint struct {
	Endpoint
	Payload RefreshPayload
}
type RefreshPayload struct {
	RefreshToken string
}
func (e RefreshEndpoint) Uri() string {
	return e.Endpoint.Uri
}

func main() {
	refreshEndpoint := RefreshEndpoint{Endpoint: Endpoint{NeedsAuthentication: true, Uri: "/foo"}, Payload: RefreshPayload{RefreshToken: "xxx"}}
	fmt.Printf("The uri is: %s, the access token is: %s", refreshEndpoint.Uri(), refreshEndpoint.Payload.RefreshToken)
}

That way we can access the uri like refreshEndpoint.Uri().

The issue remains though. How do I elegantly model a general Endpoint that can take different kinds of payloads depending on the endpoint?

I found that I can access Uri directly on RefreshEndpoint since it’s embedded. I didn’t realize that.