syntax_data: {"ast_node_type":"other","tokens":[{"end":46,"kind":"keyword","start":0,"text":"ty::CoroutineClosure(_,"}]}
source_snippet:             ty::CoroutineClosure(_, args) => {
context_before:         let (trait_ref, kind_ty) = match *self_ty.kind() {
context_after:                 let args = args.as_coroutine_closure();