M8
Bind a bean property , type is Option[] to checkbox group or radiobutton's item
property. IDE throws exception below:

java.lang.IllegalArgumentException: Selector.items is not Option[], Map, or
Collection
	at
com.sun.webui.jsf.renderkit.html.SelectorGroupRenderer.getItems(SelectorGroupRenderer.java:336)
	at
com.sun.webui.jsf.renderkit.html.SelectorGroupRenderer.renderSelectorGroup(SelectorGroupRenderer.java:300)
	at
com.sun.webui.jsf.renderkit.html.CheckboxGroupRenderer.renderEnd(CheckboxGroupRenderer.java:150)
	at
com.sun.webui.jsf.renderkit.html.AbstractRenderer.encodeEnd(AbstractRenderer.java:243)
	at
com.sun.webui.jsf.renderkit.html.AbstractDesignTimeRenderer.encodeEnd(AbstractDesignTimeRenderer.java:55)
	at
com.sun.webui.jsf.renderkit.html.SelectorDesignTimeRenderer.encodeEnd(SelectorDesignTimeRenderer.java:148)
	at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:848)
	at
org.netbeans.modules.visualweb.insync.faces.FacesPageUnit.renderBean(FacesPageUnit.java:1328)
	at
org.netbeans.modules.visualweb.insync.faces.FacesPageUnit.getFacesRenderTree(FacesPageUnit.java:1085)
	at
org.netbeans.modules.visualweb.insync.faces.FacesPageUnit.renderHtml(FacesPageUnit.java:1623)
	at
org.netbeans.modules.visualweb.designer.jsf.DomSynchronizer.processInsert(DomSynchronizer.java:924)
	at
org.netbeans.modules.visualweb.designer.jsf.DomSynchronizer.processUpdates(DomSynchronizer.java:699)
	at
org.netbeans.modules.visualweb.designer.jsf.DomSynchronizer.run(DomSynchronizer.java:658)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
	at
java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:177)
	at java.awt.Dialog$1.run(Dialog.java:1039)
	at java.awt.Dialog$3.run(Dialog.java:1091)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.awt.Dialog.show(Dialog.java:1089)
	at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:785)
	at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:819)
	at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:807)
	at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:56)
	at org.openide.util.Mutex.doEventAccess(Mutex.java:1201)
	at org.openide.util.Mutex.readAccess(Mutex.java:220)
	at org.netbeans.core.windows.services.NbPresenter.show(NbPresenter.java:792)
	at
org.netbeans.modules.visualweb.insync.CustomizerDisplayer.show(CustomizerDisplayer.java:143)
	at
org.netbeans.modules.visualweb.insync.ResultHandler.handleResult(ResultHandler.java:183)
	at
org.netbeans.modules.visualweb.insync.action.AbstractDisplayActionAction.invokeDisplayAction(AbstractDisplayActionAction.java:120)
	at
org.netbeans.modules.visualweb.insync.action.AbstractDisplayActionAction.access$200(AbstractDisplayActionAction.java:69)
	at
org.netbeans.modules.visualweb.insync.action.AbstractDisplayActionAction$SingleDisplayActionAction.actionPerformed(AbstractDisplayActionAction.java:247)
	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
	at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
	at javax.swing.AbstractButton.doClick(AbstractButton.java:357)
	at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1170)
	at
javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1211)
	at java.awt.Component.processMouseEvent(Component.java:6038)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3260)
	at java.awt.Component.processEvent(Component.java:5803)
	at java.awt.Container.processEvent(Container.java:2058)
	at java.awt.Component.dispatchEventImpl(Component.java:4410)
	at java.awt.Container.dispatchEventImpl(Container.java:2116)
	at java.awt.Component.dispatchEvent(Component.java:4240)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4322)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3986)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3916)
	at java.awt.Container.dispatchEventImpl(Container.java:2102)
	at java.awt.Window.dispatchEventImpl(Window.java:2429)
	at java.awt.Component.dispatchEvent(Component.java:4240)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
	at
java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
	at
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)