{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/BillingAppReference",
  "title": "BillingAppReference",
  "description": "App reference.",
  "type": "object",
  "properties": {
    "id": {
      "description": "The ID of the app.",
      "type": "string",
      "example": "01G65Z755AFWAKHE12NY0CQ9FH",
      "pattern": "^[0-7][0-9A-HJKMNP-TV-Z]{25}$",
      "title": "ULID"
    }
  },
  "required": [
    "id"
  ]
}