src/vs/workbench/services/progress/browser/progressService.ts/ProgressService/withPanelProgress
class ProgressService:	private withPanelProgress<P extends Promise<R>, R = unknown>(panelid: string, task: (progress: IProgress<IProgressStep>) => P, options: IProgressCompositeOptions): P {

		// show in panel
		return this.withCompositeProgress(this.panelService.getProgressIndicator(panelid), task, options);
	}