src/vs/workbench/services/progress/browser/progressIndicator.ts/CompositeProgressIndicator/constructor
class CompositeProgressIndicator:	constructor(
		progressbar: ProgressBar,
		scopeId: string,
		isActive: boolean,
		@IViewletService viewletService: IViewletService,
		@IPanelService panelService: IPanelService,
		@IViewsService viewsService: IViewsService
	) {
		super(viewletService, panelService, viewsService, scopeId);

		this.progressbar = progressbar;
		this.isActive = isActive || isUndefinedOrNull(scopeId); // If service is unscoped, enable by default
	}