--- /dev/null
+<?xml version="1.0" ?>
+
+<serializer xmlns="http://symfony.com/schema/dic/serializer-mapping"
+ xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http://symfony.com/schema/dic/serializer-mapping http://symfony.com/schema/dic/serializer-mapping/serializer-mapping-1.0.xsd">
+
+ <class name="Symfony\Component\Serializer\Tests\Fixtures\GroupDummy">
+ <attribute name="foo">
+ <group>group1</group>
+ <group>group2</group>
+ </attribute>
+
+ <attribute name="bar">
+ <group>group2</group>
+ </attribute>
+ </class>
+
+</serializer>