docs: public static void iterateTreeNoCopy (@Nonnull final IHCNode aNode, @Nonnull final IHCIteratorCallback aCallback)
    {
      ValueEnforcer.notNull (aNode, "node");
      ValueEnforcer.notNull (aCallback, "callback");
  
      // call callback on start node
      if (aCallback.call (null, aNode).isContinue ())
        _recursiveIterateTreeBreakableNoCopy (aNode, aCallback);
    }