CREATE MIGRATION m1uadgxoeuekkwaessyysetg27ov3wcdfmach7cq5k7vvqn6x6zmrq
    ONTO m1nsazfltqdfklverxefbbufjwcq5gorhbovfeeugd7q67txrihd2q
{
  ALTER TYPE default::Conversation {
      ALTER LINK user {
          ON TARGET DELETE ALLOW;
      };
  };
  ALTER TYPE default::Message {
      ALTER LINK conversation {
          ON TARGET DELETE DELETE SOURCE;
      };
  };
};