| Field | Type | Required | Description |
|---|---|---|---|
collection |
Optional<Collection> | ➖ | N/A |
rootCollection |
Optional<Collection> | ➖ | N/A |
trackingToken |
Optional<String> | ➖ | An opaque token that represents this particular Collection. To be used for /feedback reporting. |
error |
Optional<CollectionError3> | ➖ | N/A |