gistfile1.txt

  define_instance_states do
    start.to( :pending )         .automatically

    pending.to( :running )       .automatically
    pending.to( :stopped )       .on( :stop )

    running.to( :running )       .on( :reboot )
    running.to( :shutting_down ) .on( :stop )

    shutting_down.to( :stopped ) .automatically
    stopped.to( :finish )        .automatically
  end