type: object
description: A definition of the quantity being measured.
properties:
  id:
    type: string
  label:
    $ref: ../i18n.yaml
  description:
    $ref: ../i18n.yaml
  categories:
    type: array
    items:
      type: object
      properties:
        id:
          type: string
        label:
          $ref: ../i18n.yaml
        description:
          $ref: ../i18n.yaml
      required:
        - id
        - label
    minItems: 1
required:
  - label
