How do I get access to state machine object from fifo_scheduler?

Question

I'm using boost statechart libary to implement a state machine. I have created a state machine derived from asynchronous_state_machine and using it with fifo_scheduler as explained in the example in http://www.boost.org/doc/libs/1_38_0/libs/statechart/doc/tutorial.html#AsynchronousStateMachines.

Since the state machine object is created in the fifo_scheduler (or event_processor) how do I get access to it?

Thanks!