I need to run additional commands after the Discard button has been pressed.

I know how to do this with "Save" button:

```
@api.model   
def create(self, vals): 
        # my code before create
        result = super(MODEL_NAME, self).create(vals)
        # my code after create
        return result
```

But I'm unable to find method associated with "Discard" button. How is it called?