JAXBContext context = getContext(classToFill, mediaType);
unmarshaller = getJAXBUnmarshaller(type, context, mediaType);
XMLStreamReader xsr = null;
if (isBadgerFishConventionUsed) {
xsr = new BadgerFishXMLInputFactory().createXMLStreamReader(entityStream);
} else {
xsr =
new MappedXMLInputFactory(inputConfiguration)
.createXMLStreamReader(new StreamSource(entityStream));
}