src/vs/workbench/browser/parts/activitybar/activitybarPart.ts/ActivitybarPart/showActivity
class ActivitybarPart:	showActivity(viewContainerOrActionId: string, badge: IBadge, clazz?: string, priority?: number): IDisposable {
		if (this.getViewContainer(viewContainerOrActionId)) {
			return this.compositeBar.showActivity(viewContainerOrActionId, badge, clazz, priority);
		}

		if (viewContainerOrActionId === GLOBAL_ACTIVITY_ID) {
			return this.showGlobalActivity(GLOBAL_ACTIVITY_ID, badge, clazz, priority);
		}

		if (viewContainerOrActionId === ACCOUNTS_ACTIVITY_ID) {
			return this.showGlobalActivity(ACCOUNTS_ACTIVITY_ID, badge, clazz, priority);
		}

		return Disposable.None;
	}