added hints about final (this one's for André)

config.xml

@@ -353,11 +353,15 @@
             <property name="tokens" value="SINGLE_LINE_COMMENT, BLOCK_COMMENT_BEGIN"/>
             <property name="severity" value="info"/>
         </module>
-        <module name="SimplifyBooleanExpression"/>
-        <module name="SimplifyBooleanReturn"/>
-        <module name="StringLiteralEquality">
+        <module name="FinalParameters">
+            <property name="severity" value="info"/>
+        </module>
+        <module name="FinalLocalVariable">
             <property name="severity" value="info"/>
         </module>
+        <module name="SimplifyBooleanExpression"/>
+        <module name="SimplifyBooleanReturn"/>
+        <module name="StringLiteralEquality"/>
         <module name="ExplicitInitialization">
             <property name="onlyObjectReferences" value="true"/>
             <property name="severity" value="info"/>