_normalize_callback_option

# File actionpack/lib/abstract_controller/callbacks.rb, line 36
      def _normalize_callback_option(options, from, to) # :nodoc:
        if from = options[from]
          from = Array(from).map {|o| "action_name == '#{o}'"}.join(" || ")
          options[to] = Array(options[to]).unshift(from)
        end
      end