allOf:
  - $ref: './BasicChart.yaml'
  - type: object
    properties:
      genre:
        $ref: '../properties/genre.yaml'
example:
  chart_id: 'amazon_605828593_us'
  name: 'Amazon Music Top Tracks Pop US'
  country_code: 'us'
  total_positions: 300
  genre: 'POP'