{"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"|"}]}
                | Extern::Explicit(StrLit { symbol_unescaped: sym::C_dash_unwind, .. }, _)
                Extern::Explicit(StrLit { symbol_unescaped: sym::C, .. }, _)
                | Extern::Implicit(_)