def initialize_copy(orig)
      super
      @transitions = @transitions.collect { |transition| transition.clone }
      @guards      = @guards.dup
      @unless      = @unless.dup
      @options     = {}
      orig.options.each_pair { |name, setting| @options[name] = setting.is_a?(Hash) || setting.is_a?(Array) ? setting.dup : setting }
    end
def initialize_copy(orig)
      super
      @transitions = @transitions.collect { |transition| transition.clone }
      @guards      = @guards.dup
      @unless      = @unless.dup
      @options     = {}
      orig.options.each_pair { |name, setting| @options[name] = setting.is_a?(Hash) || setting.is_a?(Array) ? setting.dup : setting }
    end
called internally by Ruby 1.9 after clone()