## Why is this an issue?

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>