AsyncFunction (Guava: Google Core Libraries for Java 31.1-jre API)

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@GwtCompatible
@FunctionalInterface
public interface AsyncFunction<I extends @Nullable Object,O extends @Nullable Object>
```
Transforms a value, possibly asynchronously. For an example usage and more information, see Futures.transformAsync(ListenableFuture, AsyncFunction, Executor).

Since:

11.0

Author:

Chris Povirk

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  ListenableFuture<O> apply(I input)
  Returns an output Future to use in place of the given input.

- Method Detail
  - apply
```
ListenableFuture<O> apply(I input)
                   throws Exception
```
    Returns an output Future to use in place of the given input. The output Future need not be done, making AsyncFunction suitable for asynchronous derivations.
    Throwing an exception from this method is equivalent to returning a failing Future.
    
    Throws:
    
    Exception