{
	identifier: 'id',
	label: 'name',
	items: [
	        { id: 'ROOT', name:'Continent', children:[ {_reference: 'AF'},  {_reference: 'AS'}]},
					{ id: 'AF', name:'Africa', type:'continent', population:'900 million', area: '30,221,532 sq km',
	        		timezone: '-1 UTC to +4 UTC',
	        		children:[{_reference:'EG'}, {_reference:'KE'}, {_reference:'SD'}] },
	        	{ id: 'EG', name:'Egypt', type:'country' },
	        	{ id: 'KE', name:'Kenya', type:'country',
	        			children:[{_reference:'Nairobi'}, {_reference:'Mombasa'}] },
	        		{ id: 'Nairobi', name:'Nairobi', type:'city' },
	        		{ id: 'Mombasa', name:'Mombasa', type:'city' },
	        	{ id: 'SD', name:'Sudan', type:'country',
	        			children:{_reference:'Khartoum'} },
	        		{ id: 'Khartoum', name:'Khartoum', type:'city' },
	        	{ id: 'AS', name:'Asia', type:'continent',
	        			children:[{_reference:'CN'}, {_reference:'IN'}, {_reference:'RU'}, {_reference:'MN'}] },
	        		{ id: 'CN', name:'China', type:'country' },
	        		{ id: 'IN', name:'India', type:'country' },
	        		{ id: 'RU', name:'Russia', type:'country' },
	        		{ id: 'MN', name:'Mongolia', type:'country' }
]}