A batch of WorldAnchors which can be exported and imported between apps.
| GetAllIds | Gets all of the identifiers currently mapped in this WorldAnchorTransferBatch. |
| DeserializationCompleteDelegate | The handler for when deserialization has completed. |
| SerializationCompleteDelegate | The handler for when serialization is completed. |
| SerializationDataAvailableDelegate | The handler for when some data is available from serialization. |