xt entity in the chain.

 <p>
 A typical implementation of this method would follow the following pattern:
 <ol>
 <li>Examine the request
 <li>Optionally wrap the request object with a custom implementation to filter content or headers for input filtering
 <li>Optionally wrap the response object with a custom implementation to filter content or headers for output
 filtering
 <li>
 <ul>
 <li><strong>Either</strong> invoke the next entity in the chain using the FilterChain object
 (<code>chain.doFilter()</cod