EntityContentProducerEvents (sakai-search-api 20.2 API)

```
public interface EntityContentProducerEvents
```
Mix-in for EntityContentProducer implementations which expose the set of functions (i.e. event keys) which should trigger content indexing using that producer. This is now the preferred mechanism for content index event registration, as opposed to the historical approach where content producers registered their own events directly with SearchService. Going forward, content producer should register only with their owning SearchIndexBuilder and let that component deal with narrowly targeted event registration using the functions delcared by this interface.

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`Set<String>`	`getTriggerFunctions()`

- Method Detail
  - getTriggerFunctions
```
Set<String> getTriggerFunctions()
```

Interface EntityContentProducerEvents