</optional>
<optional>
<element name="mp:contentProxy">
- <attribute name="server">
- <data type="string"/>
- </attribute>
+ <optional>
+ <attribute name="server">
+ <data type="string"/>
+ </attribute>
+ </optional>
+ <optional>
+ <attribute name="tmp_file">
+ <data type="string"/>
+ </attribute>
+ </optional>
</element>
</optional>
</define>