{"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"///"}]}
    /// `variants` and `fields`; for example, `ManuallyDrop<Result<isize, isize>>` has
    /// Note that this is entirely orthogonal to the recursive structure defined by
    /// `IrForm::ScalarPair`! So, even with non-`Memory` `backend_repr`, `fields` and `variants`