KeyHolder (Valuables 0.3.0 API)

Type Parameters:

K - key type

All Known Subinterfaces:

AdaptedKeyValue<S,K,O,V>, DefaultAdaptedKeyValue<S,K,O,V>, DefaultKeyValue<S,K,V>, KeyValue<S,K,V>

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface KeyHolder<K>
```
Represents an association with a key.

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  K key()
  Gets the key.

- Method Detail
  - key
```
K key()
```
    Gets the key. The same key should always be returned.
    
    Returns:
    
    the key