class AASM::StateMachine

def initialize_copy(orig)

called internally by Ruby 1.9 after clone()
def initialize_copy(orig)
  super
  @states = orig.states.collect { |state| state.clone }
  @events = {}
  orig.events.each_pair { |name, event| @events[name] = event.clone }
  @global_callbacks = @global_callbacks.dup
end