context: 	handleForwardButton: function(){		var last = this.forwardStack.pop();		if(!last){ return; }		if(last.kwArgs["forward"]){			last.kwArgs.forward();		}else if(last.kwArgs["forwardButton"]){			last.kwArgs.forwardButton();		}else if(last.kwArgs["handle"]){			last.kwArgs.handle("forward");		}		this.historyStack.push(last);	},
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