easychart-8.x-3.5/config/schema/easychart.schema.yml

easychart.settings:
  type: config_object
  label: 'Easychart settings'
  mapping:
    presets:
      type: string
      label: 'Presets'
    templates:
      type: string
      label: 'Templates'
    url_update_frequency:
      type: integer
      label: 'Update frequency'