I would insert the following here:

"""
The second use case to help build a completely new and custom scorer  from a simple python function:

```
>>> def my_custom_loss_func(ground_truth, predictions):
...     diff = np.abs(ground_truth, predictions).max()
...     return np.log(1 + diff)
...
>>> my_custom_scorer = AsScore(my_custom_loss_func, greater_is_better=False)
>>> grid = GridSearchCV(LinearSVC(), param_grid={'C': [1, 10]}, scoring=my_custom_scorer)
```

"""