Sort u →
  {A : Type u_9} →
    {B : Type u_10} →
      [inst : Add A] →
        [inst_1 : Add B] →
          A ≃+ B → {A' : Type u_9} → {B' : Type u_10} → [inst' : Add A'] → [inst'_1 : Add B'] → A' ≃+ B' → Sort u