// register node types for tree renderer
registry.register(NodeTreeRenderer.POINT, new PageNodeTreeRenderer());
registry.register(NodeTreeRenderer.POINT, new TemplateNodeTreeRenderer());
registry.register(NodeTreeRenderer.POINT, new CssNodeTreeRenderer());
registry.register(NodeTreeRenderer.POINT, new AudioNodeTreeRenderer());
registry.register(NodeTreeRenderer.POINT, new ImageNodeTreeRenderer());
registry.register(NodeTreeRenderer.POINT, new VideoNodeTreeRenderer());
registry.register(NodeTreeRenderer.POINT, new OfficeDocumentNodeTreeRenderer());
registry.register(NodeTreeRenderer.POINT, new OfficeSpreadsheetNodeTreeRenderer());
registry.register(NodeTreeRenderer.POINT, new OfficePresentationNodeTreeRenderer());