syntax_data: {"ast_node_type":"other","tokens":[{"end":83,"kind":"keyword","start":0,"text":"ty::Binder::dummy(args.as_coroutine_closure().upvar_tys().to_vec())"}]}
source_snippet:                 ty::Binder::dummy(args.as_coroutine_closure().upvar_tys().to_vec())
context_before:             ty::CoroutineClosure(_, args) => {
context_after:             }