<zk>
	<zscript><![CDATA[
		import org.zkoss.zul.DefaultTreeModel;
		import org.zkoss.zul.DefaultTreeNode;
		
		DefaultTreeNode root = new DefaultTreeNode(null,
		    new DefaultTreeNode[] {
		      new DefaultTreeNode("item a"),
		      new DefaultTreeNode("item b", (DefaultTreeNode[])null),
		      new DefaultTreeNode("item c",
		        new DefaultTreeNode[] {
	    		  new DefaultTreeNode("item c1"),
	              new DefaultTreeNode("item c2")
		        })
		      }
		  );
		DefaultTreeModel model1 = new DefaultTreeModel(root);
		//@param emptyChildAsLeaf whether to treat the zero size of children node as a leaf node.
		DefaultTreeModel model2 = new DefaultTreeModel(root, true);
	]]></zscript>
	<hlayout>
		<tree model="${model1}" width="150px">
			<template name="model">
		        <treeitem label="${each}" open="true"/>
		    </template>
		</tree>
		<tree model="${model2}" width="150px">
			<template name="model">
		        <treeitem label="${each}" open="true"/>
		    </template>
		</tree>
	</hlayout>
</zk>