How to configure JcaPooledConnectionFactory with jencks JCA inbound support?

On his blog Guillaume says that JcaPooledConnectionFactory can be used for JCA inbound support. I got it to work (with great results) for outboud JMS, but can't figure it out for inbound. The ActiveMQResourceAdapter requires a connection factory of type ActiveMQConnectionFactory. Where else can you configure the underlying connection factory that is to be used by JCA inbound?

-James