social_group.links.action.yml in Open Social 8

modules/social_features/social_group/social_group.links.action.yml

File

modules/social_features/social_group/social_group.links.action.yml

social_group.add_member:
  route_name: 'entity.group_content.add_form'
  route_parameters:
    plugin_id: 'group_membership'
  class: '\Drupal\group\Plugin\Menu\LocalAction\WithDestination'
  title: 'Add member'
  appears_on:
    - 'entity.group_content.collection'