{ identifier: 'name',  label: 'name',  items: [	{ name:'Africa', type:'continent', children:[		{ name:'Egypt', type:'country' }, 		{ name:'Kenya', type:'country', children:[			{ name:'Nairobi', type:'city' },			{ name:'Mombasa', type:'city' } ]		},		{ name:'Sudan', type:'country', children:			{ name:'Khartoum', type:'city' } 		} ]	},	{ name:'Asia', type:'continent', children:[		{ name:'China', type:'country' },		{ name:'India', type:'country' },		{ name:'Russia', type:'country' },		{ name:'Mongolia', type:'country' } ]	},	{ name:'Australia', type:'continent', population:'21 million', children:		{ name:'Commonwealth of Australia', type:'country', population:'21 million'}	},	{ name:'Europe', type:'continent', children:[		{ name:'Germany', type:'country' },		{ name:'France', type:'country' },		{ name:'Spain', type:'country' },		{ name:'Italy', type:'country' } ]	},	{ name:'North America', type:'continent', children:[		{ name:'Mexico', type:'country',  population:'108 million', area:'1,972,550 sq km', children:[			{ name:'Mexico City', type:'city', population:'19 million', timezone:'-6 UTC'},			{ name:'Guadalajara', type:'city', population:'4 million', timezone:'-6 UTC' } ]		},		{ name:'Canada', type:'country',  population:'33 million', area:'9,984,670 sq km', children:[			{ name:'Ottawa', type:'city', population:'0.9 million', timezone:'-5 UTC'},			{ name:'Toronto', type:'city', population:'2.5 million', timezone:'-5 UTC' }]		},		{ name:'United States of America', type:'country' } ]	},	{ name:'South America', type:'continent', children:[		{ name:'Brazil', type:'country', population:'186 million' },		{ name:'Argentina', type:'country', population:'40 million' } ]	} ]}