List current file versions for legal hold policy assignment

Get a list of current file versions for a legal hold assignment. In some cases you may want to get previous file versions instead. In these cases, use the `GET /legal_hold_policy_assignments/:id/file_versions_on_hold` API instead to return any previous versions of a file for this legal hold policy assignment. Due to ongoing re-architecture efforts this API might not return all file versions held for this policy ID. Instead, this API will only return the latest file version held in the newl...