Do not nag about hidden fields in setters

ARSnova-checkstyle-checker.xml

@@ -162,7 +162,9 @@
         <!-- module name="DoubleCheckedLocking"/-->    <!-- MY FAVOURITE -->
         <module name="EmptyStatement"/>
         <module name="EqualsHashCode"/>
-        <module name="HiddenField"/>
+        <module name="HiddenField">
+        	<property name="ignoreSetter" value="true"/>
+        </module>
         <module name="IllegalInstantiation"/>
         <module name="InnerAssignment"/>
         <module name="MagicNumber"/>