code: function() {
        var t = this;
  
        // Detach any prior monitor
        if (t.monitor) {
          t.monitor.off('change', t.onMonitorChange, t);
          delete t.monitor;
        }
      }
docs: /*
  Detach the TreeNode monitor from this node in the tree
  
  This detaches the currently attached monitor from this tree node.
  
  @method detachMonitor