bat-8.x-1.x-dev/modules/bat_fullcalendar/bat_fullcalendar.links.menu.yml

bat_fullcalendar.fullcalendar:
  title: 'Fullcalendar'
  route_name: bat_fullcalendar.fullcalendar
  description: 'Configure settings for Fullcalendar.'
  parent: bat.admin.config
  weight: 10