Hierarchical URI routing w/ Spring

I have a hierarchy of container type objects that I want to be able to use.

ex:
   /branch/{branch_id}/
   /branch/{branch_id}/branch/{branch_id}/
   /branch/{branch_id}/branch/{branch_id}/branch/{branch_id}/
etc.
This structure can be arbitrarily deep, and each branch can have other items attached.

ex:
   /branch/{branch_id}/
   /branch/{branch_id}/branch/{branch_id}/leaves/{leaf_id}/
   /branch/{branch_id}/branch/{branch_id}/buds/{bud_id}/

etc.

I want to be able to configure this using the Spring integration.  I have this:
<bean name="root" class="org.restlet.ext.spring.SpringRouter">
    <constructor-arg ref="application" />

    <property name="attachments">
        <map>
            <entry key="/branch/{branch_id}"
                value="com.example.api.resource.BranchResource"/>
            <entry key="/branch/{branch_id}/leaves/{leaf_id}/"
                value="com.example.api.resource.LeafResource"/>
            <entry key="/branch/{branch_id}/buds/{bud_id}/"
                value="com.example.api.resource.budResource"/>
        </map>
    </property>
</bean>

<!--  Spring Application -->
<bean id="application" class="org.restlet.Application">
        <property name="name" value="exampleAPI"></property>
</bean>

which handles the root cases, but does not handle nested branches.  Is there a way to construct the URI
patterns to look at this arbitrarily deep hierarchy, but still get teh correct leaf and bud resources?

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