rem: Begin the callback sequence with a non-error value.  
context: 	callback: function(res){		/*		Begin the callback sequence with a non-error value.				callback or errback should only be called once on a given		Deferred.		*/		this._check();		this._resback(res);	},
meta: 4707	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/4707/50c3492c4c3c825dbd3401e134a19ed46799c456/Deferred.js/buggy/www/resources/dojo-ajax/src/Deferred.js