code: function (options, callback) {
  			var sampleImageCategories = ['abstract', 'animals', 'business', 'cats', 'city', 'food', 'nature', 'technics', 'transport'];
  			var numItems = 200;
  
  			// build dataSource based with options
  			var resp = {
  				count: numItems,
  				items: [],
  				pages: (Math.ceil(numItems / (options.pageSize || 30))),
  				page: options.pageIndex
  			};
  
  			// get start and end limits for JSON
  			var i, l;
  			i = options.pageIndex * (options.pageSize || 30);
  			l = i + (options.pageSize || 30);
  			resp.start = i + 1;
  			resp.end = l;
  
  			// add sample items to datasource
  			for (i; i < l; i++) {
  				resp.items.push({
  					name: ('Thumbnail ' + (i + 1)),
  					src: 'http://lorempixel.com/65/65/' + sampleImageCategories[Math.floor(Math.random() * 9)] + '/?_=' + i
  				});
  			}
  
  			// call and simulate latency
  			setTimeout(function () {
  				callback(resp);
  			}, loadDelays[Math.floor(Math.random() * 4)]);
  		}
docs: thumbnail view setup