/** * Returns parent index for the row or {@code null}. * * @param item * the item to find the parent of * @return the parent index or {@code null} for top-level items */ public Integer getParentIndex(T item) { return mapper.getParentIndex(item); }
/** * Returns parent index for the row or {@code null}. * * @param item * the item to find the parent of * @return the parent index or {@code null} for top-level items */ public Integer getParentIndex(T item) { return mapper.getParentIndex(item); }