provider/ns1.go
func (n NS1DomainService) ListZones() ([]*dns.Zone, *http.Response, error) {
	return n.service.Zones.List()
}
func (n NS1DomainService) ListZones() ([]*dns.Zone, *http.Response, error) {
	return n.service.Zones.List()
}
// ListZones wraps the List method of the API's Zones service