widget_engine-8.x-1.2/widget_engine.links.menu.yml

# Widget menu items definition
entity.widget.collection:
  title: 'Widget list'
  route_name: entity.widget.collection
  description: 'List Widget entities'
  parent: system.admin_content
  weight: 100

# Widget type menu items definition
entity.widget_type.collection:
  title: 'Widget type'
  route_name: entity.widget_type.collection
  description: 'List Widget type (bundles)'
  parent: system.admin_structure
  weight: 99

# Widget add menu items definition
entity.widget.add_page:
  title: 'Add widget'
  route_name: entity.widget.add_page
  description: 'Add widget'
  parent: system.admin_content
  weight: 99