return; 
return null; 
	this.subscribe = function(	/*String */	channel,					/*Object */	objOrFunc,					/*String */	funcName){ // return: dojo.Deferred		// summary:		//		inform the server of this client's interest in channel		// channel:		//		name of the cometd channel to subscribe to		// objOrFunc:		//		an object scope for funcName or the name or reference to a		//		function to be called when messages are delivered to the		//		channel		// funcName:		//		the second half of the objOrFunc/funcName pair for identifying		//		a callback function to notifiy upon channel message delivery		if(objOrFunc){			var tname = "/cometd"+channel;			var subs=this._subscriptions[tname];			if(!subs || subs.length==0){				subs=[];				this._sendMessage({					channel: "/meta/subscribe",					subscription: channel				});								var _ds = this._deferredSubscribes;				_ds[channel] = new dojo.Deferred();				if(_ds[channel]){					_ds[channel].cancel();					delete _ds[channel];				}			}						for (var i in subs){				if (subs[i].objOrFunc===objOrFunc&&(!subs[i].funcName&&!funcName||subs[i].funcName==funcName))					return;			}						var topic = dojo.subscribe(tname, objOrFunc, funcName);			subs.push({ 				topic: topic, 				objOrFunc: objOrFunc, 				funcName: funcName			});			this._subscriptions[tname] =subs;		}		return this._deferredSubscribes[channel];	}
5168	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/5168/4cc04beeb7438f9f144821df99ae4b372d6f3594/_base.js/buggy/cometd/_base.js