You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: windows.go
    path of file: ./repos/moby/libnetwork/drivers/windows
    
    the code of the file until where you have to start completion: //go:build windows

// Shim for the Host Network Service (HNS) to manage networking for
// Windows Server containers and Hyper-V containers. This module
// is a basic libnetwork driver that passes all the calls to HNS
// It implements the 4 networking modes supported by HNS L2Bridge,
// L2Tunnel, NAT and Transparent(DHCP)
//
// The network are stored in memory and docker
    
func ParseEndpointConnectivity(epOptions map[string]interface{}) (*EndpointConnectivity, error) {
	if epOptions == nil {
		return nil, nil
	}

	ec := &EndpointConnectivity{}

	if opt, ok := epOptions[netlabel.PortMap]; ok {
		if bs, ok := opt.([]types.PortBinding); ok {
			ec.PortBindings = bs
		} else {
			return nil, fmt.Errorf("Invalid endpoint configuration")
		}
	}

	if opt, ok := epOptions[netlabel.ExposedPorts]; ok {
		if ports, ok := opt.([]types.TransportPort); ok {
			ec.ExposedPorts = ports
		} else {
			return nil, fmt.Errorf("Invalid endpoint configuration")
		}
	}
	return ec, nil
}