charts_highstock-1.0.x-dev/config/schema/charts_highstock.schema.yml

charts.settings.library_plugin.highstock:
  type: charts.settings.library_plugin.highcharts
  mapping:
    global_options:
      label: 'Global options'
      type: mapping
      mapping:
        lang:
          type: mapping
          label: Language
          mapping:
            range_selector_zoom:
              type: label
              label: 'Range selector zoom'