/** Returns true if the file referenced by \p filename is zipped and
** needs to be unzipped for being handled
** @note For natively zipped formats, such as dia/odg, this returns false.
**/
bool isZippedFile(support::FileName const & filename) const;
/** Returns true if the file referenced by \p filename is zipped and
** needs to be unzipped for being handled
** @note For natively zipped formats, such as dia/odg, this returns false.
**/
bool isZippedFile(support::FileName const & filename) const;