syntax_data: {"ast_node_type":"variable","tokens":[{"end":80,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// } else if let TyKind::CoroutineClosure(def_id, args) = closure_ty.kind()
context_before:     ///     println!("{closure_kind:?}");
context_after:     ///     && let Some(closure_kind) = args.as_coroutine_closure().kind_ty().to_opt_closure_kind()