270     static isBaseGroup(grp) {  argument
271         if (grp instanceof LayerGroup) {
272             const lyrs = grp.getLayers().getArray();
287         groups.forEach(function (grp) {  argument
289             const descendantVisibility = grp.getLayersArray().map(function (l) {
298                 grp.setVisible(true);
299                 grp.set('indeterminate', false);
304                 grp.setVisible(false);
305                 grp.set('indeterminate', false);
308                 grp.setVisible(true);
309                 grp.set('indeterminate', true);
320         groups.forEach(function (grp) {  argument
321             const group = grp;
358     static getGroupsAndLayers(grp, filterFn) {  argument
365         LayerSwitcher.forEachRecursive(grp, function (lyr, idx, arr) {