} 
}, 
	_assertIsAttribute: function(/* attribute-name-string */ attribute){		//	summary:		//		This function tests whether the item passed in is indeed a valid 'attribute' like type for the store.		//	attribute: 		//		The attribute to test for being contained by the store.		if(typeof attribute !== "string"){ 			throw new dojox.data.QueryReadStore.InvalidAttributeError(this._className+": '"+attribute+"' is not a valid attribute identifier.");		}	}
5168	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/5168/23693cd0ff180e6a40e4072b0468a7e81e16dd37/QueryReadStore.js/buggy/data/QueryReadStore.js