CREATE MIGRATION m13bulyyzk4lgnxam33lxxez5etrcgyzn5ndnoyrylab2bmjw6jb7q
    ONTO m1dn7we4iusvjor3e2axkxlngw22cbxpmqairv6zyo2ufykzrpo6da
{
  ALTER TYPE default::Conversation {
      ALTER LINK user {
          ON TARGET DELETE DELETE SOURCE;
      };
  };
};