This rule allows to make sure that all JSF Expressions are syntactically correct.
Noncompliant code example
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html">
<h:body>
First name
<h:outputText value="#{user.firstName && @@}"/> <!-- Noncompliant -->
</h:body>
</html>
