code: private static <I, D> void moveIncoming(AbstractBaseDTNode<I, D> newNode,
                                              AbstractBaseDTNode<I, D> oldNode,
                                              D label) {
          newNode.getIncoming().insertAllIncoming(oldNode.getSplitData().getIncoming(label));
      }
docs: Moves all transition from the "incoming" list (for a given label) of an old node to the "incoming" list of a new
  node.
  
  @param newNode
  the new node
  @param oldNode
  the old node
  @param label
  the label to consider