Getting actions registered into an actiontoolbar from a toolwindow

The toolwindows seem to do the dollowing to setup buttons that handle actions through this way and eventually register via ActionManager.

DefaultActionGroup group = (DefaultActionGroup)ActionManager.getInstance().getAction("ChangesViewToolbar");
ActionToolbar toolbar = ActionManager.getInstance().createActionToolbar(ActionPlaces.CHANGES_VIEW_TOOLBAR, group, false);

Is it possible to retrieve all the registered [local] actions in such a tool-window with a toolwindow handle?