this.extensionPointRegistry = extensionPointRegistry;
this.tuscanyRuntime = tuscanyRuntime;
extensionPointRegistry.getExtensionPoint(UtilityExtensionPoint.class).getUtility(ActiveNodes.class).getActiveNodes().add(this);
domainRegistry.addContributionListener(new ContributionListener() {
public void contributionUpdated(String uri) {
loadedContributions.remove(uri);
}
public void contributionRemoved(String uri) {
loadedContributions.remove(uri);