Our Node.js script processes 1500 records in a loop, calling genesysClient.usersApi.getUserById() for each. It crashes after ~300 iterations with a 401 Unauthorized error, which means the access token expired mid-run. We initialized the SDK once at startup with new PureCloudPlatformClientV2(). Is there a built-in method to auto-refresh the token during the batch, or do we need to manually check client.getAccessToken() and re-authenticate every N requests?