CREATE MIGRATION m1jr6zfrtfdqlhsqlrbtfycstnqth7g62qfo67vhisccw76jsq2wmq
    ONTO m1oqsdj6bfa6gqquonw63gm53g6zo2uf2cjicsjeaxtklx7ypyww4q
{
  ALTER TYPE default::Message {
      CREATE PROPERTY role: std::str;
  };
};