```
public interface MonitorUpdateListener
```
For reporting events on a Monitor's query index

All Methods Instance Methods Default Methods
Modifier and Type	Method	Description
`default void`	`afterClear()`	Called after all queries have been removed from the Monitor's query index
`default void`	`afterDelete(List<String> queryIds)`	Called after a set of queries have been deleted from the Monitor's query index
`default void`	`afterUpdate(List<MonitorQuery> updates)`	Called after a set of queries have been added to the Monitor's query index
`default void`	`onPurge()`	Called after the Monitor's query cache has been purged of deleted queries
`default void`	`onPurgeError(Throwable t)`	Called if there was an error removing deleted queries from the Monitor's query cache

Interface MonitorUpdateListener