pub const OPTIONAL_METHODS: &[&str];Expand description
The built-in Optional[T] methods this codegen lowers on the tagged value.
is_some/is_none test the tag; unwrap/unwrap_or extract the payload (or
a default); map/flat_map transform it. The set mirrors the checker’s
Optional method resolution (checker.rs), so every method that type-checks
has a lowering.