Render multiple components in React Router

In v4, according to the docs, you can render multiple components like this:

<Route path='/some-path' render={() =>
  <Fragment>
    <FirstChild />
    <SecondChild />
  </Fragment>
} />

To passe multiple component you can do like this :

<Route path="groups" components={{main: Groups, sidebar: GroupsSidebar}} />
<Route path="users" components={{main: Users, sidebar: UsersSidebar}}>

See the doc here : https://github.com/ReactTraining/react-router/blob/v3/docs/API.md#named-components