ExecutionObserver (steady-lang 3.2.3 API)

```
public interface ExecutionObserver
```
ExecutionObserver interface.

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  void callback(AbstractGoal _g)
  callback.

- Method Detail
  - callback
```
void callback(AbstractGoal _g)
```
    callback.
    
    Parameters:
    
    _g - a AbstractGoal object.