Hi! Here, the return type for find_in_batches is set as T::Enumerator[T::Enumerator[A]], but I believe the actual return type is T::Enumerator[T::Array[A]].

This is implied in the documentation:

Yields each batch of records that was found by the find options as an array.

And I've checked this at runtime:

MyModel.find_in_batches.map do |batch|
  T.let(batch, T::Enumerator[MyModel]) # This fails
end

This is with Tapioca 0.16.11, Sorbet 0.5.11934, and Rails 8.1.0.alpha.