// TocItem creation and update should be made in a dedicated function and
// updateItem should be rewritten to uniformly update the matching items from
// all TOCs.
-bool TocBackend::updateItem(DocIterator const & dit_in)
+bool TocBackend::updateItem(DocIterator const & dit_in) const
{
// we need a text
DocIterator dit = dit_in.getInnerText();