// It'd be convenient to demand TryFrom<u8, Error: core::fmt::Debug>, but RFC 2289 hasn't landed in
// stable yet
pub trait Code: Into<u8> + core::convert::TryFrom<u8> {}

impl Code for u8 {}

pub trait OptionNumber: Into<u16> + core::convert::TryFrom<u16> {}

impl OptionNumber for u16 {}