code: function (url) {
  		var current = this.current, params = current.params;
  
  		var state = find(url);
  
  		if (state.is_changed(current.name, params)) {
  			this.current = state;
  			this.trigger_event("state_changed", state);
  			this.trigger_event("state_changed_success", url);
  		}
  	}
docs: transition_to : function (name, params) { },