code: function NavigationOutliner(options) {
  		var parent = lib.node(options.parent);
  		if (!parent) { throw "no parent"; } //$NON-NLS-0$
  		if (!options.serviceRegistry) {throw "no service registry"; } //$NON-NLS-0$
  		this._parent = parent;
  		this._registry = options.serviceRegistry;
  		this.commandService = options.commandService;
  		this.render();
  	}
docs: Creates a new user interface element showing an outliner used for navigation
  
  @name orion.navoutliner.NavigationOutliner
  @class A user interface element showing a list of various navigation links.
  @param {Object} options The service options
  @param {Object} options.parent The parent of this outliner widget
  @param {orion.serviceregistry.ServiceRegistry} options.serviceRegistry The service registry
  @param {orion.commands.CommandService} options.commandService The in-page (synchronous) command service.