#ifndef WIN32
        boost::property_tree::write_xml(os, treeWithIndexAttributes, boost::property_tree::xml_writer_make_settings(' ', 2));
#else
        boost::property_tree::write_xml(os, treeWithIndexAttributes, boost::property_tree::xml_writer_make_settings<std::string>(' ', 2));
#endif
    }
    else
    {
#ifndef WIN32
        boost::property_tree::write_xml(os, tree, boost::property_tree::xml_writer_make_settings(' ', 2));
#else
        boost::property_tree::write_xml(os, tree, boost::property_tree::xml_writer_make_settings<std::string>(' ', 2));
#endif