{"ast_node_type":"other","tokens":[{"end":63,"kind":"keyword","start":0,"text":"(accepted,"}]}
    (accepted, rvalue_static_promotion, "1.21.0", Some(38865)),
    /// Allows code like `let x: &'static u32 = &42` to work (RFC 1414).
    /// Allows `Self` in type definitions (RFC 2300).