message: Add TODO comment with a link to discussion.
diff: @@ -934,6 +934,10 @@ class VectorTree : private _VectorTreeImpl {
  // Reference to a VectorTree node in which this object represents a list of
  // children.
  + // TODO(mglb): try to get rid of this reference. See:
  + // https://github.com/chipsalliance/verible/pull/1252#discussion_r825196108
  + // Also look at MapTree::KeyValuePair() - `offsetof` is already used there
  + // so it could be user here too.
  VectorTree& node_;
  // Actual data container where the nodes are stored.
  