presto-main/src/main/java/io/prestosql/server/ResourceGroupStateInfoResource.java/ResourceGroupStateInfoResource/urlDecode
class ResourceGroupStateInfoResource:    private static String urlDecode(String value)
    {
        try {
            return URLDecoder.decode(value, "UTF-8");
        }
        catch (UnsupportedEncodingException e) {
            throw new WebApplicationException(BAD_REQUEST);
        }
    }