CREATE MIGRATION m1xxfshhhqeharx244nyz5gs27xxrsp6bhb2f7smizwj6pf3bsqwtq
    ONTO m1nb4byflyh4jp3yp6zdr6ydzw7btucfslsznwz7ooywnmbjxqyl6q
{
  ALTER TYPE default::Conversation {
      CREATE REQUIRED PROPERTY seleted: std::bool {
          SET default := false;
      };
  };
};