syntax_data: {"ast_node_type":"other","tokens":[{"end":72,"kind":"keyword","start":0,"text":"ty::Coroutine(_,"}]}
source_snippet:             ty::Coroutine(_, args) => args.as_coroutine().discr_ty(tcx),
context_before:             ty::Adt(adt, _) if adt.is_enum() => adt.repr().discr_type().to_ty(tcx),