{"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"Some(Desugared(Async,"}]}
        Some(Desugared(Async, Block)) => "async_block",
        Some(Desugared(Gen, Fn)) => "gen_fn",
        Some(Desugared(Async, Closure)) => "async_closure",