syntax_data: {"ast_node_type":"other","tokens":[{"end":66,"kind":"keyword","start":0,"text":"))"}]}
source_snippet:                             )) = self.tcx().coroutine_kind(def_id)
context_before:                                 hir::CoroutineSource::Closure,
context_after:                                 && args.len() > parent_args.len()