* @throws MWException (It gets caught next level up though)
* @return string If the iptc hash is good or not. One of 'iptc-no-hash',
* 'iptc-good-hash', 'iptc-bad-hash'.
* @throws MWException (It gets caught next level up though)
* @return string If the iptc hash is good or not. One of 'iptc-no-hash',
* 'iptc-good-hash', 'iptc-bad-hash'.