Set the tags for current photo to list tags.
        (flickr.photos.settags)

def setTags(self, tags):
        """Set the tags for current photo to list tags.
        (flickr.photos.settags)
        """
        method = 'flickr.photos.setTags'
        tags = uniq(tags)
        _dopost(method, auth=True, photo_id=self.id, tags=tags)
        self._load_properties()