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