balance                 Balances selection frequencies for unequal
                        groups
create_formula          Create a sparse-group boosting formula
get_coef                Aggregated and raw coefficients in a sparse
                        group boosting model
get_coef_path           Path of aggregated and raw coefficients in a
                        sparse-group boosting model
get_varimp              Variable importance of a sparse-group boosting
                        model
plot_effects            Visualizing a sparse-group boosting model
plot_path               Coefficient path of a sparse-group boosting
                        model
plot_varimp             Variable importance bar plot of a sparse group
                        boosting model
