void operator()(std::pair<GridClientVariant, GridClientVariant> pair) {
        KeyValue* keyValue = protoMap.add_entry();
        ObjectWrapper* key = keyValue->mutable_key();
        ObjectWrapper* value = keyValue->mutable_value();

        GridClientObjectWrapperConvertor::wrapSimpleType(pair.first, *key);
        GridClientObjectWrapperConvertor::wrapSimpleType(pair.second, *value);
    }