private TableColumn<S, ?> getNextColumn(boolean forward) {
        List<TableColumn<S, ?>> columns = new ArrayList<>();
        for (TableColumn<S, ?> column : getTableView().getColumns()) {
            columns.addAll(getLeaves(column));
        }
        //There is no other column that supports editing.
        if (columns.size() < 2) {
            return null;
        }
        int currentIndex = columns.indexOf(getTableColumn());
        int nextIndex = currentIndex;
        if (forward) {
            nextIndex++;
            if (nextIndex > columns.size() - 1) {
                nextIndex = 0;
            }
        } else {
            nextIndex--;
            if (nextIndex < 0) {
                nextIndex = columns.size() - 1;
            }
        }
        return columns.get(nextIndex);
    }