pm-4.1.x-dev/modules/pm_feature/pm_feature.links.menu.yml

entity.pm_feature.collection:
  title: 'Feature'
  route_name: entity.pm_feature.collection
  parent: pm.admin.content_items
  description: ''
  weight: -15

entity.pm_feature_type.collection:
  title: 'Feature types'
  parent: pm.admin.content_settings
  route_name: entity.pm_feature_type.collection
  weight: -14