HttpInboundServletRewrite in = (HttpInboundServletRewrite) event;
QueryStringBuilder query = QueryStringBuilder.createNew();
query.addParameters(in.getInboundAddress().getQuery());
String token = query.decode().getParameter(tokenName);
if (token != null)
{
String decoded = encodingStrategy.decode(token);
if (checksumStrategy.checksumValid(decoded))