/** Return the cache with all bibfiles in use of the child buffer
* (including bibfiles of grandchild documents).
* Return an empty vector if the child doc is not loaded.
* \param buffer the Buffer containing this inset.
*/
support::FileNameList const &
/** Return the cache with all bibfiles in use of the child buffer
* (including bibfiles of grandchild documents).
* Return an empty vector if the child doc is not loaded.
* \param buffer the Buffer containing this inset.
*/
support::FileNameList const &