public ContributionContentProcessor(ExtensionPointRegistry extensionPoints, StAXArtifactProcessor<Object> extensionProcessor, Monitor monitor) {
this.modelFactories = extensionPoints.getExtensionPoint(FactoryExtensionPoint.class);
this.modelResolvers = extensionPoints.getExtensionPoint(ModelResolverExtensionPoint.class);
this.monitor = monitor;
URLArtifactProcessorExtensionPoint artifactProcessors = extensionPoints.getExtensionPoint(URLArtifactProcessorExtensionPoint.class);
this.artifactProcessor = new ExtensibleURLArtifactProcessor(artifactProcessors, this.monitor);
this.extensionProcessor = extensionProcessor;
this.contributionFactory = modelFactories.getFactory(ContributionFactory.class);
this.scanners = extensionPoints.getExtensionPoint(ContributionScannerExtensionPoint.class);
}