commerce_sub.plugin_type.yml

commerce_sub.sub_item:
  label: Commerce Sub Item
  provider: commerce_sub
  plugin_manager_service_id: plugin.manager.sub_item
  plugin_definition_decorator_class: Drupal\plugin\PluginDefinition\ArrayPluginDefinitionDecorator

commerce_sub.sub_term:
  label: Commerce Sub Term
  provider: commerce_sub
  plugin_manager_service_id: plugin.manager.sub_term
  plugin_definition_decorator_class: Drupal\plugin\PluginDefinition\ArrayPluginDefinitionDecorator