IGroupKeyExtractor (openbis_standard_technologies SNAPSHOT-r1677241701 API)

```
public interface IGroupKeyExtractor<K,E>
```
Interface defining the role of a key extractor.

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  K getKey(E e)
  Returns the key of type K from an entity E.

- Method Detail
  - getKey
```
K getKey(E e)
```
    Returns the key of type K from an entity E.