lass="block">Defines variable resolution behavior for the EL implicit objects defined in the JSP specification.
 
 <p>
 The following variables are resolved by this <code>ELResolver</code>, as per the JSP specification:
 </p>
 <ul>
 <li><code>pageContext</code> - the <code>PageContext</code> object.</li>
 <li><code>pageScope</code> - a <code>Map</code> that maps page-scoped attribute names to their values.</li>
 <li><code>requestScope</code> - a <code>Map</code> that maps request-scoped attribute names to t