syntax_data: {"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"UpvarArgs::CoroutineClosure(args)"}]}
source_snippet:             UpvarArgs::CoroutineClosure(args) => args.as_coroutine_closure().tupled_upvars_ty(),
context_before:             UpvarArgs::Coroutine(args) => args.as_coroutine().tupled_upvars_ty(),
context_after:         }