rem: item[this._itemId] = i; 
add: item[this._itemNumPropName] = i; 
context: 	_updateItemIdIndexValues: function(){		for(var i = 0; i < this._arrayOfAllItems.length; ++i){			var item = this._arrayOfAllItems[i];			item[this._itemId] = i;		}	},
meta: 4497	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/4497/372e1ba59f47be8a6792557e65fc678d3ea2275e/ItemFileWriteStore.js/clean/data/ItemFileWriteStore.js