src/vs/workbench/browser/parts/notifications/notificationsViewer.ts/NotificationsListDelegate/createOffsetHelper
class NotificationsListDelegate:	private createOffsetHelper(container: HTMLElement): HTMLElement {
		const offsetHelper = document.createElement('div');
		offsetHelper.classList.add('notification-offset-helper');

		container.appendChild(offsetHelper);

		return offsetHelper;
	}