default <T> T getMetadata(String key, TypeToken<T> type) {
        JsonElement data = getRawMetadata().get(key);
        if (data == null) {
            return null;
        }
        return GsonProvider.standard().fromJson(data, type.getType());
    }
Gets whether the server is currently whitelisted.

@return if the server is whitelisted
helper/src/main/java/me/lucko/helper/network/Server.java