public static function clearNAVCache(PonyDocsProductVersion $version) { error_log("INFO [" . __METHOD__ . "] Deleting cache entry of NAV for product " . $version->getProductName() . " version " . $version->getVersionName()); $cache = PonyDocsCache::getInstance(); $key = "NAVDATA-" . $version->getProductName() . "-" . $version->getVersionName(); $cache->remove($key); }