Elm 0.18中无请求的HTTP请求

我想做一些非常不实用的事情,在elm中发出HTTP请求,而不处理任何类型的响应。基本上是这样的:

testView : Html Msg
testView =
  div [] [
    button [onClick TestAction] [text "Test Action"]
  ]

update : Msg -> Model -> ( Model, Cmd Msg )
update msg model =
    case msg of
      ...
        TestAction ->
          ( model, testActionCmd )
      ...

import Http
import HttpBuilder exposing (..)
...
testActionCmd : Cmd Msg
testActionCmd =
  ( "http://localhost:4000/fakeurl" )
    |> get  -- this is a side effect; unrelated to the Msg below
  Cmd.none  -- this is what I want to return