public SecondPanel(final PluginParameter parameter, final SearchPanelModel model) {
this.parameter = parameter;
this.model = model;
this.view = new JPanel(new GridBagLayout());
//---------------------------------------
this.aaPanel = new AdditionalAttributePanel();
this.searchTree = new SearchTree(this.parameter, this.model);
this.optionPanel = new OptionPanel(this.model);
this.actionPanel = new ActionPanel(this.model);
//create split pane between conditional panel and additional panel
this.treeAndAddSplitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT, this.searchTree.getView(), this.aaPanel.getView());