code: function() {
  
  		for (var i = 0, count = this._bind_changed_listeners.length; i < count; i++) {
  
  			this._binds[i].removeListener(this._bind_changed_listeners[i]);
  
  		}
  
  		this._bind_changed_listeners = null;
  		this.suspendRefreshable();
  
  	}
docs: Free resources and make this instance unusable