{"ast_node_type":"other","tokens":[{"end":84,"kind":"keyword","start":0,"text":"//"}]}
        // so we just call `predicates_for_generics` directly to avoid redoing work.
        // FIXME: could replace with the following, but we already calculated `method_predicates`,
        // `self.add_required_obligations(self.span, def_id, &all_args);`