{"ast_node_type":"other","tokens":[{"end":138,"kind":"keyword","start":0,"text":"AsyncFnKindUpvars,"}]}
    AsyncFnKindUpvars,       sym::async_fn_kind_upvars, async_fn_kind_upvars,      Target::AssocTy,          GenericRequirement::Exact(5);
    AsyncFnKindHelper,       sym::async_fn_kind_helper, async_fn_kind_helper,      Target::Trait,          GenericRequirement::Exact(1);