How to configure meta for parent routing ?

[a81n9]

- pages
  - parent 
    - child.vue

I did not find related solutions in the Docs
I don't know how to configure meta for parent routing:

{
  path: '/parent',
  // meta: { title: 'ParentTitle' } // How to configure meta for parent routing
  children: [{...}]
}

[posva]

See #33