The current implementation of the CF explainer allows for a "partial" goal to be specified:
As an example, if a predicitive model's outcome has the schema:

outcome_A: boolean, outcome_B: double

For many real-world scenarios it is beneficial to be able to provide a subset of outcomes as the goal and effectively omit other outcomes from the search.

For instance (using the model above), the user might be interested only in outcome_A as the main goal while outcome_B could take any value.

The aim is to add better testing and documentation for the partial goal CF search.