How to use

setOutputMarkupPlaceholderTag

method

in

org.apache.wicket.markup.html.panel.Panel

public void setNext(AjaxRequestTarget target, Panel panel){
  panel.setOutputMarkupPlaceholderTag(true);
  addOrReplace(panel);
  target.add(panel);
}

public WidgetPanel(String id, IModel<Widget> model) {
  super(id, model);
  
  Widget widget = model.getObject(); 
    
  setOutputMarkupId(true);
  
  widgetHeaderPanel = new WidgetHeaderPanel("header", model);
  add(widgetHeaderPanel);
  
  if (model.getObject().hasSettings()) {
    settingsPanel = widget.createSettingsPanel("settings");
  } else {
    settingsPanel = new EmptyPanel("settings");
  }
  settingsPanel.setOutputMarkupPlaceholderTag(true);
  settingsPanel.setVisible(false);
  add(settingsPanel);
    
  widgetView = model.getObject().createView("content"); 
  add(widgetView);
}

    setOutputMarkupPlaceholderTag(true).setVisible(!hideLeft));
valueFragment.add(getValuePanel("rightAttribute", prop, right));

public WidgetPanel(String id, IModel<Widget> model) {
  super(id, model);
  
  Widget widget = model.getObject(); 
    
  setOutputMarkupId(true);
  
  widgetHeaderPanel = new WidgetHeaderPanel("header", model);
  add(widgetHeaderPanel);
  
  if (model.getObject().hasSettings()) {
    settingsPanel = widget.createSettingsPanel("settings");
  } else {
    settingsPanel = new EmptyPanel("settings");
  }
  settingsPanel.setOutputMarkupPlaceholderTag(true);
  settingsPanel.setVisible(false);
  add(settingsPanel);
    
  widgetView = model.getObject().createView("content"); 
  add(widgetView);
}