pub struct TlsStream<IO> {
    pub(crate) io: IO,
    pub(crate) session: ClientConnection,
    pub(crate) state: TlsState,

    #[cfg(feature = "early-data")]
    pub(crate) early_waker: Option<std::task::Waker>,
}

pub struct TlsStream<IO> {
    pub(crate) io: IO,
    pub(crate) session: ServerConnection,
    pub(crate) state: TlsState,
}

/// A container for any channel.
#[derive(Clone, Debug, Serialize)]
#[serde(untagged)]
#[non_exhaustive]
pub enum Channel {
    /// A channel within a [`Guild`].
    Guild(GuildChannel),
    /// A private channel to another [`User`] (Direct Message). No other users may access the
    /// channel. For multi-user "private channels", use a group.
    Private(PrivateChannel),
}

warning: large size difference between variants
  --> src/model/channel/mod.rs:47:1
   |
47 | / pub enum Channel {
48 | |     /// A channel within a [`Guild`].
49 | |     Guild(GuildChannel),
   | |     ------------------- the largest variant contains at least 312 bytes
50 | |     /// A private channel to another [`User`] (Direct Message). No other users may access the
51 | |     /// channel. For multi-user "private channels", use a group.
52 | |     Private(PrivateChannel),
   | |     ----------------------- the second-largest variant contains at least 0 bytes
53 | | }
   | |_^ the entire enum is at least 0 bytes
   |
   = note: `#[warn(clippy::large_enum_variant)]` on by default
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#large_enum_variant
help: consider boxing the large fields to reduce the total size of the enum
   |
49 |     Guild(Box<GuildChannel>),

pub struct Recursive(Box<Recursive>);

pub enum Foo {
    A([u8; 201]),
    B(Recursive),
}

// 5 | |     B(Recursive),
//   | |     ------------ the second-largest variant contains at least 0 bytes