FailureHandler (FastClasspathScanner 3.1.15 API)

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 FailureHandler
```
A callback that can be called on scanning failure during an asynchronous scan.

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  void onFailure(Throwable throwable)
  Called on scanning failure during an asynchronous scan.

- Method Detail
  - onFailure
```
void onFailure(Throwable throwable)
```
    Called on scanning failure during an asynchronous scan.