examples-3.x-dev/modules/render_example/render_example.links.menu.yml

render_example.description:
  title: Render Example
  description: Examples of building and altering render arrays.
  route_name: render_example.description
  expanded: TRUE

render_example.arrays:
  title: Building render arrays
  description: Building render arrays in controllers.
  route_name: render_example.arrays
  parent: render_example.description
  weight: -9

render_example.altering:
  title: Altering render arrays
  description: Using hooks and callbacks to alter render arrays.
  route_name: render_example.altering
  parent: render_example.description
  weight: -8