niobi-8.x-2.0-alpha4/modules/niobi_group/niobi_group.routing.yml
modules/niobi_group/niobi_group.routing.yml
niobi_group.group_admin:
path: '/group/{group}/admin'
defaults:
_title: 'Admin Settings'
_controller: '\Drupal\niobi_group\Controller\NiobiGroupController::settings_page'
requirements:
_group_permission: 'administer group'
_group_member: 'TRUE'