Cache (instrumentation-api-caching 1.3.1 API)

```
public interface Cache<K,V>
```
A cache from keys to values.

Method Summary

All Methods Static Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`V`	`computeIfAbsent(K key, Function<? super K,? extends V> mappingFunction)`	Returns the cached value associated with the provided `key`.
`V`	`get(K key)`	Returns the cached value associated with the provided `key` if present, or `null` otherwise.
`static CacheBuilder`	`newBuilder()`	Returns a new `CacheBuilder` to configure a `Cache`.
`void`	`put(K key, V value)`	Puts the `value` into the cache for the `key`.
`void`	`remove(K key)`	Removes a value for `key` if present.

- Method Detail
  - newBuilder
```
static CacheBuilder newBuilder()
```
    Returns a new CacheBuilder to configure a Cache.
  - computeIfAbsent
```
V computeIfAbsent(K key,
                  Function<? super K,? extends V> mappingFunction)
```
    Returns the cached value associated with the provided key. If no value is cached yet, computes the value using mappingFunction, stores the result, and returns it.
  - get
```
V get(K key)
```
    Returns the cached value associated with the provided key if present, or null otherwise.
  - put
```
void put(K key,
         V value)
```
    Puts the value into the cache for the key.
  - remove
```
void remove(K key)
```
    Removes a value for key if present.