media_library_extended-1.x-dev/config/schema/pane.schema.yml

media_library_extended.pane.*:
  type: config_entity
  label: 'Media library pane config'
  mapping:
    id:
      type: string
      label: 'ID'
    label:
      type: label
      label: 'Label'
    uuid:
      type: string
    bundle:
      type: string
      label: 'Media Bundle'
    source_plugin:
      type: string
      label: 'Source Plugin'
    source_plugin_configuration:
      type: media_library_extended.source_plugin.[%parent.source_plugin]
      label: 'Source Plugin Configuration'

media_library_extended.source_plugin.*:
  type: mapping
  label: 'Source Plugin Configuration'
  mapping: {}