anchor.diff:      }
   
       if (oldBuilt == null)
  -      _mountedComponents.add(this);
  +      _enqueueDidMount(this);
   
       int lastOrder = _currentOrder;
       _currentOrder = _order;
  
positive.code:     node._parent = this;
  
      if (oldNode == null) {
        _trace('_sync(insert) ${node._key}');
      } else {
        _trace('_sync(stateless) ${node._key}');
      }
      node._sync(oldNode, host, insertBefore);
      if (oldNode != null)
  
negative.code:     print(buffer);
    }
  
    void _traceSync(_SyncOperation op, String key) {
      if (!_shouldTrace)
        return;
  
      String opString = op.toString().toLowerCase();
      String outString = opString.substring(opString.indexOf('.') + 1);
      _trace('_sync($outString) $key');
    }
  
    void _removeChild(Node node) {
      _traceSync(_SyncOperation.REMOVAL, node._key);
      node._remove();
    }
  
  