syntax_data: {"ast_node_type":"other","tokens":[{"end":45,"kind":"keyword","start":0,"text":"self.out.extend(obligations);"}]}
source_snippet:                 self.out.extend(obligations);
context_before:                 let obligations = self.nominal_obligations(did, args);
context_after:                 let upvars = args.as_coroutine_closure().tupled_upvars_ty();