# File lib/paper_trail/frameworks/rails/controller.rb, line 5
      def self.included(base)
        before = [
          :set_paper_trail_enabled_for_controller,
          :set_paper_trail_whodunnit,
          :set_paper_trail_controller_info
        ]
        after = []

        if base.respond_to? :before_action
          # Rails 4+
          before.map {|sym| base.before_action sym }
          after.map  {|sym| base.after_action  sym }
        else
          # Rails 3.
          before.map {|sym| base.before_filter sym }
          after.map  {|sym| base.after_filter  sym }
        end
      end