Efficient method for attribute conversion in schema transformations

const Something = Schema.Struct({
  id: SomethingId,
  createdAt: DateTimeUtc
});

const ReadSomethingEntity = Schema.transform(
  Schema.Struct({
    id: SomethingId,
    createdAt: Schema.Int
  }),
  Something,
  // ...
);

const WriteSomethingEntity = Schema.transform(
  Schema.Struct({
    id: SomethingId,
    createdAt: Schema.Int
  }),
  Something,
  // ...
);