{"ast_node_type":"other","tokens":[{"end":65,"kind":"keyword","start":0,"text":"(unstable,"}]}
    (unstable, anonymous_lifetime_in_impl_trait, "1.63.0", None),
    /// Allows using anonymous lifetimes in argument-position impl-trait.
    /// Allows access to the emscripten_wasm_eh config, used by panic_unwind and unwind