Concepts
========
Widgets
  - WidgetProperties
    - WIDGET_PROPERTY_LABEL (STRING)
    - WIDGET_PROPERTY_TYPE (STRING)
    - WIDGET_PROPERTY_DEFAULT (STRING)
    - WIDGET_PROPERTY_ENABLED (BOOLEAN)
    - WIDGET_PROPERTY_META
      - ALLOWED_VALUES (LIST<STRING>)
  - Components
  - WidgetCards
    - WIDGET_TYPE (STRING)
    - WIDGET_CARD_LABEL (STRING)
    - WIDGET_CARD_ENABLED (BOOLEAN)
    - WIDGET_CARD_ICON (UTF-16)