src/vs/workbench/contrib/terminal/browser/terminalTabsList.ts/TerminalTabsAccessibilityProvider/getAriaLabel
class TerminalTabsAccessibilityProvider:	getAriaLabel(instance: ITerminalInstance): string {
		let ariaLabel: string = '';
		const tab = this._terminalGroupService.getGroupForInstance(instance);
		if (tab && tab.terminalInstances?.length > 1) {
			const terminalIndex = tab.terminalInstances.indexOf(instance);
			ariaLabel = localize({
				key: 'splitTerminalAriaLabel',
				comment: [
					`The terminal's ID`,
					`The terminal's title`,
					`The terminal's split number`,
					`The terminal group's total split number`
				]
			}, "Terminal {0} {1}, split {2} of {3}", instance.instanceId, instance.title, terminalIndex + 1, tab.terminalInstances.length);
		} else {
			ariaLabel = localize({
				key: 'terminalAriaLabel',
				comment: [
					`The terminal's ID`,
					`The terminal's title`
				]
			}, "Terminal {0} {1}", instance.instanceId, instance.title);
		}
		return ariaLabel;
	}