group_content_menu-8.x-1.0-rc3/config/schema/group_content_menu.schema.yml

group_content_menu_block:
  type: block_settings
  label: 'Group content menu'
  mapping:
    level:
      type: integer
      label: 'Starting level'
    depth:
      type: integer
      label: 'Maximum number of levels'
    expand_all_items:
      type: boolean
      label: 'Expand all items'
    relative_visibility:
      type: boolean
      label: 'Relative visibility'
    theme_hook_suggestion:
      type: string
      label: 'Theme hook suggestion'

block.settings.group_content_menu:*:
  type: group_content_menu_block