Method _getRootTab

packages/main/src/TabContainer.ts:1054–1064

(tab: Tab | undefined)

	}

	_getRootTab(tab: Tab | undefined): Tab | undefined {
		while (tab?.hasAttribute("ui5-tab")) {
			if (tab.parentElement?.hasAttribute("ui5-tabcontainer")) {
				break;
			}

			tab = (tab.parentElement ?? undefined) as Tab | undefined;
		}

		return tab;
	}

	_updateEndOverflow(itemsDomRefs: Array<TabInStrip | TabSeparatorInStrip>) {
		// show end overflow