external_entity-1.0.x-dev/external_entity.links.action.yml

external_entity.type.add_form:
  route_name: entity.external_entity_type.add_form
  title: 'Add Type'
  appears_on:
    - entity.external_entity_type.collection

external_entity.resource_display.add_form:
  route_name: entity.external_entity_resource_display.add_form
  title: 'Add Resource Display'
  appears_on:
    - entity.external_entity_resource_display.collection

external_entity.connection.add_form:
  route_name: entity.external_entity_connection.add_form
  title: 'Add Connection'
  appears_on:
    - entity.external_entity_connection.collection