Fedora Datastream, how to handle it?

Hello!

Im trying out webservice calls (SOAP) to a fedora server. Right now I'm trying to get a certain Datastream through a method that looks like this:

public Datastream getDatastream(String pid, String dataStreamId, String asOfDateTime) {
Datastream result = null;
try

Unknown macro: { // Call Web Service Operation result = port.getDatastream(pid, dataStreamId, asOfDateTime); }

catch (Exception ex)

Unknown macro: { ex.printStackTrace(); }

return result;
}

This returns a Datastream object... however I don't know what do do with it next... For example, this is a piece of XML. How can I print it as a String?

thanks!