{"ast_node_type":"other","tokens":[{"end":68,"kind":"keyword","start":0,"text":"(Some(FnCtxt::Free),"}]}
            (Some(FnCtxt::Free), Some(header)) => match header.ext {
            (Some(FnCtxt::Foreign), _) => return,
                Extern::Explicit(StrLit { symbol_unescaped: sym::C, .. }, _)