{"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"xform_ret_ty"}]}
                    xform_ret_ty = ocx.normalize(cause, self.param_env, xform_ret_ty);
                    // FIXME: Weirdly, we normalize the ret ty in this candidate, but no other candidates.
                    // Check whether the impl imposes obligations we have to worry about.