src/vs/workbench/browser/parts/panel/panelPart.ts/BasePanelPart/setStoredCachedViewletsValue
class BasePanelPart:	private setStoredCachedViewletsValue(value: string): void {
		this.storageService.store(this.pinnedPanelsKey, value, StorageScope.PROFILE, StorageTarget.USER);
	}