{"ast_node_type":"other","tokens":[{"end":66,"kind":"keyword","start":0,"text":"//"}]}
            //                                  supertrait bounds!
            //        FIXME(more_maybe_bounds): We don't call this for e.g., trait object tys or
            //        FIXME(trait_alias, #143122): We don't call it for the RHS. Arguably however,