{"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"ty::GenericParamDefKind::Const"}]}
        ty::GenericParamDefKind::Const { .. } => {
        // Const parameters are well formed if their type is structural match.
            let ty = tcx.type_of(param.def_id).instantiate_identity();