set_options_for_callbacks!

# File activerecord/lib/active_record/transactions.rb, line 278
        def set_options_for_callbacks!(args, enforced_options = {})
          options = args.extract_options!.merge!(enforced_options)
          args << options

          if options[:on]
            fire_on = Array(options[:on])
            assert_valid_transaction_action(fire_on)
            options[:if] = Array(options[:if])
            options[:if].unshift("transaction_include_any_action?(#{fire_on})")
          end
        end