return len(m.Addresses)
}

func (m *AddressMap) DeepCopy() *AddressMap {
	if m == nil {
		return nil
	}
	return &AddressMap{
		Addresses: m.GetAddresses(),
	}
}

// GetAddresses returns the mapping of clusters to addresses.
func (m *AddressMap) GetAddresses() map[cluster.ID][]string {
	if m == nil {
		return nil
	}

	m.mutex.RLock()
	defer m.mutex.RUnlock()

	if m.Addresses == nil {
		return nil

		for port := range ports {
			instances := gc.ps.ServiceEndpointsByPort(svc, port, nil)
			if len(instances) > 0 {
				foundInternal.Insert(fmt.Sprintf("%s:%d", g, port))
				foundInternalIP.InsertAll(svc.GetAddresses(&model.Proxy{Metadata: &model.NodeMetadata{ClusterID: gc.cluster}})...)
				if svc.Attributes.ClusterExternalAddresses.Len() > 0 {
					// Fetch external IPs from all clusters