Method serialize

tests/common/features/json_struct.rs:28–35

(&self, _serializer: S)

impl Serialize for NonSerializableStruct {
    fn serialize<S>(&self, _serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        Err(serde::ser::Error::custom(
            "intentionally failing serialization",
        ))
    }
}

#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]