src/vs/workbench/services/preferences/common/preferencesModels.ts/AbstractSettingsModel/updateResultGroup
class AbstractSettingsModel:	updateResultGroup(id: string, resultGroup: ISearchResultGroup | undefined): IFilterResult | undefined {
		if (resultGroup) {
			this._currentResultGroups.set(id, resultGroup);
		} else {
			this._currentResultGroups.delete(id);
		}

		this.removeDuplicateResults();
		return this.update();
	}