del objects and their 
resolvable properties by calling
method <code>getFeatureDescriptors</code> on the <code>ELResolver</code>. This method exposes objects
of type <code>java.beans.FeatureDescriptor</code>, providing all information of interest 
on top-level model objects as well as their properties.</p> 

<h3><a name="Functions">Jakarta Expression Language Functions</a></h3>

<p>If a Jakarta Expression Language expression uses a function 
(for example <code>${fn:toUpperCase(customer.name)}</code>), then 