Failure (Vert.x Stack - Docs 5.0.0.CR3 API)

```
public interface Failure
```
A failure provides the details of a failure that happened during the execution of a test case.
The failure can be:
- an assertion failure: an assertion failed
- an error failure: an expected error occured
Author:

Julien Viet

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  Throwable cause()
  
  boolean isError()
  
  String message()
  
  String stackTrace()

- Method Detail
  - isError
```
boolean isError()
```
    Returns:
    
    true if the failure is an error failure otherwise it is an assertion failure
  - message
```
String message()
```
    Returns:
    
    the error message
  - stackTrace
```
String stackTrace()
```
    Returns:
    
    the stack trace
  - cause
```
Throwable cause()
```
    Returns:
    
    the underlying exception causing this failure, it may be null