Unmarshalling saml metadata extensions

[Maduranga Siriwardena]

Hi all,

I have created some extensions in saml metadata. I'm trying to unmarshall
the xml using opensaml2. I have created the interface, implementation
class, builder, marshaller and unmarshaller of the extension. Then I
registered the object providers using like this (my extension is
RequestedAudiences).

Configuration.registerObjectProvider(RequestedAudiences.TYPE_NAME, new
RequestedAudiencesBuilder(), new RequestedAudiencesMarshaller(), new
RequestedAudiencesUnmarshaller());

When I try to get the extensions from SPSSODescriptor using the bellow code
segment

List<XMLObject> extensions =
spssoDescriptor.getExtensions().getUnknownXMLObjects();

It returns objects of the type
org.opensaml.xml.schema.impl.XSAnyImpl

I want to get an object of type XMLObject so that I can cast it into the
the actual extension implementation class I have created. Can anyone
suggest what I am doing wrong?

-- 
Maduranga Siriwardena
Undergraduate
Department of Computer Science and Engineering
Faculty of Engineering, University of Moratuwa.
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