public List<T> getNextHistoryItems() {

		List<T> list = new ArrayList<>();
		int nextIndex = historyIndex + 1;
		for (int i = nextIndex; i < historyStack.size(); i++) {
			list.add(historyStack.get(i));
		}
		return list;
	}
Get all items in the history that come after the current history item.  They are 
returned in navigation order, as traversed if {@link #goForward()} is called.

@return the items
Ghidra/Framework/Generic/src/main/java/util/HistoryList.java