facets-8.x-1.x-dev/tests/facets_custom_widget/config/schema/facets_custom_widget.schema.yml

plugin.plugin_configuration.facets_processor.invalid_qt:
  type: config_object

plugin.plugin_configuration.facets_processor.test_pre_query:
  type: mapping
  label: Configuration
  mapping:
    test_value:
      type: label
      label: The value used for testing