final IDatabaseObjectInfo parentDbinfo = parentNode.getDatabaseObjectInfo();
final String catalogName = parentDbinfo.getCatalogName();
final String schemaName = parentDbinfo.getSimpleName();
ObjectTreeNode node;
IDatabaseObjectInfo seqInfo = new DatabaseObjectInfo(catalogName,
schemaName, "GENERATORS", IObjectTypes.GENERATOR_PARENT, md);
node = new ObjectTreeNode(session, seqInfo);
node.addExpander(new GeneratorParentExpander(_plugin));
childNodes.add(node);
seqInfo = new DatabaseObjectInfo(catalogName,
schemaName, "DOMAINS", IObjectTypes.DOMAIN_PARENT, md);
node = new ObjectTreeNode(session, seqInfo);
node.addExpander(new DomainParentExpander(_plugin));
childNodes.add(node);