Then:
```rust
#[derive(Clone, Copy)]
#[repr(u8)]
enum Test {
    A = 12,
    B = 14,
}

#[derive(SerBytes)]
struct SerTest {
    pub a: u32,
    pub b: f32,
    pub c: Test,
    pub d: u16,
}
// ...
    println!("Ser Start");
    let a = SerTest {
        a: 69_123,
        b: 1.232,
        c: Test::A,
        d: 1_000,
    };

    println!("serialized: {:?}", a.serialize());
// serialized: [3, 14, 1, 0, 45, 178, 157, 63, 12, 232, 3]