def get_cache_key(self):
        if not self.is_model:
            return None

        pars = ''
        if self.params:
            pars = ','.join(':'.join((smart_str(key), smart_str(self.params[key]))) for key in sorted(self.params.keys()))

        return normalize_key('%s:box:%d:%s:%s' % (
                _get_key(KEY_PREFIX, self.ct, pk=self.obj.pk), settings.SITE_ID, str(self.box_type), pars
            ))
Returns a dict mapping all Go files to their mtimes.
dataset/ETHPy150Open ella/ella/ella/core/box.py/Box.get_cache_key--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/tools/devappserver2/go_application.py/GoApplication._get_go_files_to_mtime