ExceptionObserver (Protelis unspecified Javadoc API)

All Known Implementing Classes:

SimpleExceptionObserver
```
public interface ExceptionObserver
```
This observer intercepts exception thrown during the tests.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.lang.Exception`	`exceptionThrown(java.lang.Exception ex)`	An exception has been thrown.
`java.util.List<java.lang.Exception>`	`getExceptionList()`
`java.util.Optional<java.lang.Exception>`	`getFirstException()`
`java.util.Optional<java.lang.Exception>`	`getLastException()`

- Method Detail
  - exceptionThrown
```
java.lang.Exception exceptionThrown(java.lang.Exception ex)
```
    An exception has been thrown.
    
    Parameters:
    
    ex - exception
    
    Returns:
    
    the same exception
  - getExceptionList
```
java.util.List<java.lang.Exception> getExceptionList()
```
    Returns:
    
    list of all the thrown exception
  - getLastException
```
java.util.Optional<java.lang.Exception> getLastException()
```
    Returns:
    
    last thrown exception
  - getFirstException
```
java.util.Optional<java.lang.Exception> getFirstException()
```
    Returns:
    
    first thrown exception