{"ast_node_type":"other","tokens":[{"end":62,"kind":"keyword","start":0,"text":"self.enabled_lang_features().hash_stable(hcx,"}]}
        self.enabled_lang_features().hash_stable(hcx, hasher);
        // struct has private fields (to ensure its invariant is maintained)
        self.enabled_lib_features().hash_stable(hcx, hasher);