{"ast_node_type":"other","tokens":[{"end":46,"kind":"keyword","start":0,"text":"|"}]}
        | ty::Coroutine(def_id, args, ..) => {
        | ty::CoroutineClosure(def_id, args)
            // Name will be "{closure_env#0}<T1, T2, ...>", "{coroutine_env#0}<T1, T2, ...>", or