# File lib/rack/session/redis.rb, line 33
      def get_session(env, sid)
        if env['rack.session.options'][:skip]
          [generate_sid, {}]
        else
          with_lock(env, [nil, {}]) do
            unless sid and session = with { |c| c.get(sid) }
              session = {}
              sid = generate_unique_sid(session)
            end
            [sid, session]
          end
        end
      end