The following is a GitHub patch. Please summarize the key changes and identify potential problems. Suggest meaningful code improvements as a code example. Don't ask any questions. 
### Select objects from all namespaces
 
The `*` wildcard can be used to select events issued by Flux objects from any `namespace`:
 
```yaml
eventSources:
  - kind: HelmRelease
    name: 'service1'
    namespace: '*'
```
 
It requires to have cross-namespace references enabled for the controller. The response should be in all capital letters.
user