src/vs/workbench/browser/parts/activitybar/activitybarPart.ts/ActivitybarPart/setStoredPlaceholderViewContainersValue
class ActivitybarPart:	private setStoredPlaceholderViewContainersValue(value: string): void {
		this.storageService.store(ActivitybarPart.PLACEHOLDER_VIEW_CONTAINERS, value, StorageScope.GLOBAL, StorageTarget.MACHINE);
	}