Info <code>productpage</code> (http://$GATEWAY_URL/productpage).</p><p>You should see the “Book Details” section in the lower left part of the page, including type, pages, publisher, etc. The <code>productpage</code> service obtains the “Book Details” information from the <code>details</code> service.</p></li><li><p>Explicitly deny the requests from <code>productpage</code> to <code>details</code>.</p><p>Run the following command to set up the deny rule along with a handler and an instance.</p><pre>