src/vs/base/browser/ui/list/listPaging.ts/PagedAccessibilityProvider/getAriaLabel
class PagedAccessibilityProvider:	getAriaLabel(index: number): string | null {
		const model = this.modelProvider();

		if (!model.isResolved(index)) {
			return null;
		}

		return this.accessibilityProvider.getAriaLabel(model.get(index));
	}