def METHOD_NAME(export_info: Dict[str, list]) -> List[str]:
    """Get headers for exported warehouses.
    Headers are build from slug. Example: "slug-value (warehouse quantity)"
    """
    warehouse_ids = export_info.get("warehouses")
    if not warehouse_ids:
        return []
    warehouses_headers = (
        Warehouse.objects.filter(pk__in=warehouse_ids)
        .order_by("slug")
        .annotate(header=Concat("slug", V(" (warehouse quantity)")))
        .values_list("header", flat=True)
    )
    return list(warehouses_headers)