src/vs/workbench/contrib/markers/browser/markersViewActions.ts/MarkersFilters/showWarnings
class MarkersFilters:	set showWarnings(showWarnings: boolean) {
		if (this._showWarnings !== showWarnings) {
			this._showWarnings = showWarnings;
			this._onDidChange.fire(<IMarkersFiltersChangeEvent>{ showWarnings: true });
		}
	}