// use ella::RowFormat;
// #[derive(Debug, Clone, RowFormat)]
// #[row(view = "SimpleView", builder = "SimpleBuilder")]
// struct Simple {
// x: f32,
// y: i32,
// }
// #[derive(Debug, Clone, RowFormat)]
// struct Tuple(
// #[row(name = "x")] u8,
// #[row(name = "y")] ella::Tensor2<f64>,
// );
// #[derive(Debug, Clone, RowFormat)]
// struct AsType {
// #[row(type = "ella::Tensor1<f32>")]
// z: Vec<f32>,
// }
// #[derive(Debug, Clone, RowFormat)]
// struct Empty {}
// #[derive(Debug, Clone, RowFormat)]
// struct NewType(Simple);