ファイルのリテンションを取得

curl -i -X GET "https://api.box.com/2.0/file_version_retentions/3424234" \
     -H "authorization: Bearer <ACCESS_TOKEN>"

await client.fileVersionRetentions.getFileVersionRetentionById(
  fileVersionRetention.id!,
);

client.file_version_retentions.get_file_version_retention_by_id(
    file_version_retention.id
)

await client.FileVersionRetentions.GetFileVersionRetentionByIdAsync(fileVersionRetentionId: NullableUtils.Unwrap(fileVersionRetention.Id));

BoxFileVersionRetention policy = new BoxFileVersionRetention(api, id);
BoxFileVersionRetention.Info policyInfo = policy.getInfo();

retention_info = client.file_version_retention(retention_id='12345').get()
print(f'The file version retention ID is {retention.id} and the data time applied at is {retention.applied_at}')

BoxFileVersionRetention retention = await client.RetentionPoliciesManager
    .GetFileVersionRetentionAsync("55555");

client.retentionPolicies.getFileVersionRetention('55555').then((retention) => {
	/* retention -> {
			type: 'file_version_retention',
			id: '55555',
			applied_at: '2015-08-06T22:02:24-07:00',
			disposition_at: '2016-08-06T21:45:28-07:00',
			winning_retention_policy:
			{ type: 'retention_policy',
				id: '11111',
				policy_name: 'Tax Documents' },
			file_version:
			{ type: 'file_version',
				id: '44444',
				sha1: '4262d6250b0e6f440dca43a2337bd4621bad9136' },
			file: { type: 'file', id: '33333', etag: '2' } }
		*/
});

client.files.getVersionRetention(retentionId: "123456"){ result in
    guard case let .success(retention) = result else {
        print("Error getting file version retention")
        return
    }
    
    print("File version retention: \(retention.id)")
}