CounterfactualMethod    Base class for Counterfactual Explanation
                        Methods
CounterfactualMethodClassif
                        Base class for Counterfactual Explanation
                        Methods for Classification Tasks
CounterfactualMethodRegr
                        Base class for Counterfactual Explanation
                        Methods for Regression Tasks
Counterfactuals         Counterfactuals Class
MOCClassif              MOC (Multi-Objective Counterfactual
                        Explanations) for Classification Tasks
MOCRegr                 MOC (Multi-Objective Counterfactual
                        Explanations) for Regression Tasks
NICEClassif             NICE (Nearest Instance Counterfactual
                        Explanations) for Classification Tasks
NICERegr                NICE (Nearest Instance Counterfactual
                        Explanations) for Regression Tasks
RandomSearchClassif     Random Search for Classification Tasks
RandomSearchRegr        Random Search for Regression Tasks
WhatIfClassif           WhatIf for Classification Tasks
WhatIfRegr              WhatIf for Regression Tasks
dist_to_interval        Computes the (absolute, pairwise) distance
                        between the vector elements and an interval
eval_distance           Evaluates a distance function and checks for
                        correct output format
make_param_set          Creates a ParamSet for the features of a
                        data.table.
smallest_n_indices      Returns the indices of the n smallest elements
                        in a vector
