[jackson-user] Is there a way to add an attribute to the wrapper element for a collection when using XML?

[SM]

I have the following classes

@JsonTypeInfo(use=JsonTypeInfo.Id.NAME, include=JsonTypeInfo.As.PROPERTY, 
property="type", defaultImpl=NoClass.class)
@JsonSubTypes({
    @JsonSubTypes.Type(value = AllowAction.class                      , 
name = "allow")
    ...
})
public abstract class Action {
    ...
}

public class AllowAction extends Action {
    ...
}

public class ActionList extends ArrayList<Action> {

    ...
}

When ActionList is written out as XML I get the following

<actions>
    <action type="allow">
        ...
    </action>
    <action type="...">
        ...
    </action>
    <action type="...">
        ...
    </action>
</actions>

Do to some backwards compatibility issues I would like to add another tag 
to the action element

<action type="allow" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; 
xsi:type="allowAction"/>
    ...
</action>

I haven't had much luck finding a way to do this and would appreciate any 
help I can get. Thanks.

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