// Create URL artifact processors
URLArtifactProcessorExtensionPoint urlProcessors =
registry.getExtensionPoint(URLArtifactProcessorExtensionPoint.class);
urlProcessors.addArtifactProcessor(new XYZProcessor(modelFactories, monitor));
// Create stax artifact processors
StAXArtifactProcessorExtensionPoint artifactProcessors =
registry.getExtensionPoint(StAXArtifactProcessorExtensionPoint.class);