# File lib/merb-core/dispatch/session.rb, line 198
      def session=(new_session)
        if self.session?(new_session.class.session_store_type)
          original_session_id = self.session(new_session.class.session_store_type).session_id
          if new_session.session_id != original_session_id
            set_session_id_cookie(new_session.session_id)
          end
        end
        session_stores[new_session.class.session_store_type] = new_session
      end