protected List<TreeNode> getChildren() {
List<Object> children = new ArrayList<Object>();
AiravataConfigurations airavataConfigurations = new AiravataConfigurations(getRegistry());
children.add(airavataConfigurations);
HostDescriptions hostDescriptions = new HostDescriptions(getRegistry());
children.add(hostDescriptions);
ServiceDescriptions serviceDescriptions = new ServiceDescriptions(getRegistry());
children.add(serviceDescriptions);
// ApplicationDeploymentDescriptions applicationDeploymentDescriptions = new ApplicationDeploymentDescriptions(
// getRegistry());