Can we revert to the defaults if this isn't specified? Also, this pattern for resolving the timeouts might be a bit better to work with:

```javascript
_config = _config || {};

webshotOptions.renderDelay = OaeUtil.getNumberParam(_config.renderDelay, webshotOptions.renderDelay);
webshotOptions.timeout = OaeUtil.getNumberParam(_config.timeout, webshotOptions.timeout);
```