Router (Solr 9.0.0 solrj API)

```
public interface Router
```
identify shards for a given routing key or document id

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  String shard(String routingKey)
  shard name for a given routing key

- Method Detail
  - shard
```
String shard(String routingKey)
```
    shard name for a given routing key