{"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"(accepted,"}]}
    (accepted, trait_upcasting, "1.86.0", Some(65991)),
    /// Dyn upcasting is casting, e.g., `dyn Foo -> dyn Bar` where `Foo: Bar`.
    /// Allows #[repr(transparent)] on univariant enums (RFC 2645).