serialize not work for Option

[peacess]

#[test]
fn test_option(){
#[derive(Debug,Default, Clone, PartialEq)]
#[alkahest::alkahest(Formula, Serialize,SerializeRef, Deserialize)]
pub struct Sub {
pub id: String,
}
#[derive(Debug,Default, Clone, PartialEq)]
#[alkahest::alkahest(Formula, Serialize,SerializeRef, Deserialize)]
pub struct Data {
pub data_i32: i32,
pub sub: Option_,
}

let mut data = Data::default();
data.data_i32 = 1;
data.sub = None;
let size = alkahest::serialized_size::<Data, _>(&data);
let mut buffer = vec![0; size.0];
let re = alkahest::serialize::<Data, _>(&data, &mut buffer);
println!("{:?}", re);
assert_eq!(re,Err(alkahest::BufferExhausted));

}

// output: Err(BufferExhausted)

[zakarumych]

Did you try it on HEAD? Seems to be working with latest changes