ds-8.x-3.9/config/schema/ds.layout_plugin.schema.yml

ds.layout_plugin.settings.default:
  type: layout_plugin.settings
  mapping:
    classes:
      type: 'sequence'
      label: 'The layout classes'
      sequence:
        type: ds.classes.[%key]
        label: 'Classes array'
    wrappers:
      type: 'sequence'
      label: 'The layout wrappers'
      sequence:
        type: string
        label: 'Field wrapper'
    outer_wrapper:
      type: string
      label: 'The outer wrapper of the layout'
    attributes:
      type: string
      label: 'The attributes of the layout'
    link_attribute:
      type: string
      label: 'The link attribute of the layout'
    link_custom:
      type: string
      label: 'The custom path of the layout'
    label:
      type: string
      label: 'The position of the label'

layout_plugin.settings.ds.*:
  type: ds.layout_plugin.settings.default