func (client *SIRIClient) StopDiscovery(request *siri.SIRIStopPointsDiscoveryRequest) (*sxml.XMLStopPointsDiscoveryResponse, error) {
    node, err := client.prepareAndSendRequest(siriClientArguments{
        request:           request,
        expectedResponses: []string{"StopPointsDiscoveryResponse"},
        acceptGzip:        true,