instance method stale_session_check!

# File actionpack/lib/action_dispatch/middleware/session/abstract_store.rb, line 56
      def stale_session_check!
        yield
      rescue ArgumentError => argument_error
        if argument_error.message =~ %r{undefined class/module ([\w:]*\w)}
          begin
            # Note that the regexp does not allow $1 to end with a ':'
            $1.constantize
          rescue LoadError, NameError => const_error
            raise ActionDispatch::Session::SessionRestoreError, "Session contains objects whose class definition isn't available.\nRemember to require the classes for all objects kept in the session.\n(Original exception: #{const_error.message} [#{const_error.class}])\n"
          end
          retry
        elsif argument_error.message =~ %r{dump format error \(user class\)}
          # Error unmarshalling object from session.
          {}
        else
          raise
        end
      end