--- Kconv.kconv(str, out_code, in_code = Kconv::AUTO)
    ʸ str Υ󥳡ǥ󥰤 out_code ѴΤ
    ֤ޤin_code ꤵƤ str Υ󥳡ǥ󥰤
    in_code Ȥưޤ

    out_code in_code ǻꤷޤ

