# Catalog Object Reference

A reference to a Catalog object at a specific version. In general this is
used as an entry point into a graph of catalog objects, where the objects exist
at a specific version.

## Structure

`CatalogObjectReference`

## Fields

| Name | Type | Tags | Description | Getter | Setter |
|  --- | --- | --- | --- | --- | --- |
| `objectId` | `?string` | Optional | The ID of the referenced object. | getObjectId(): ?string | setObjectId(?string objectId): void |
| `catalogVersion` | `?int` | Optional | The version of the object. | getCatalogVersion(): ?int | setCatalogVersion(?int catalogVersion): void |

## Example (as JSON)

```json
{
  "object_id": null,
  "catalog_version": null
}
```