}

    @Override
    public final V put(final String key, final V value) {
        return super.put(convertKey(key), value);
    }

    @Override
    public void putAll(final Map<? extends String, ? extends V> map) {
        for (final Map.Entry<? extends String, ? extends V> entry : map.entrySet()) {
            put(convertKey(entry.getKey()), entry.getValue());
        }
    }

    @Override