urlProcessors.addArtifactProcessor(new ContributionMetadataDocumentProcessor(staxProcessor, inputFactory));
urlProcessors.addArtifactProcessor(new ContributionGeneratedMetadataDocumentProcessor(staxProcessor, inputFactory));
urlProcessors.addArtifactProcessor(new CompositeDocumentProcessor(staxProcessor, inputFactory, null));
// Create contribution info processor
contributionInfoProcessor = new ContributionInfoProcessor(modelFactories, modelResolvers, urlProcessor);
// Create a document builder (used to pretty print XML)
documentBuilder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
}