callback

# File actionpack/lib/action_controller/caching/sweeping.rb, line 82
          def callback(timing)
            controller_callback_method_name = "#{timing}_#{controller.controller_name.underscore}"
            action_callback_method_name     = "#{controller_callback_method_name}_#{controller.action_name}"

            send!(controller_callback_method_name) if respond_to?(controller_callback_method_name, true)
            send!(action_callback_method_name)     if respond_to?(action_callback_method_name, true)
          end