for (PluginDataModel item : pluginsMap.keySet()) {
treePanel.addToPlugsNode(item);
}
treePanel.addToRootNode(settingsDataModel);
treePanel.addToRootNode(infoDataModel);
treePanel.getTree().addTreeSelectionListener(new TreeMediator(this));
treePanel.expand();
//add info and settings to plugins map
pluginsMap.put(settingsDataModel, settingsPanel);
pluginsMap.put(infoDataModel, infoPanel);