StAXArtifactProcessorExtensionPoint artifactProcessors =
registry.getExtensionPoint(StAXArtifactProcessorExtensionPoint.class);
artifactProcessors.addArtifactProcessor(new ImplementationXYZProcessor(modelFactories,
monitor));
artifactProcessors.addArtifactProcessor(new ImportXYZProcessor(modelFactories,
monitor));
artifactProcessors.addArtifactProcessor(new ExportXYZProcessor(modelFactories,
monitor));
// create model resolvers