Metadata: &core.Metadata{
					FilterMetadata: map[string]*structpb.Struct{
						util.IstioMetadataKey: {
							Fields: map[string]*structpb.Value{
								"services": {Kind: &structpb.Value_ListValue{ListValue: &structpb.ListValue{Values: []*structpb.Value{
									{Kind: &structpb.Value_StructValue{StructValue: &structpb.Struct{Fields: map[string]*structpb.Value{
										"host": {
											Kind: &structpb.Value_StringValue{

                 << attr_value.value_case();
  }
  return "<Unknown AttrValue type>";  // Prevent missing return warning
}

bool IsEmptyList(const AttrValue::ListValue& list) {
  return list.s_size() == 0 && list.i_size() == 0 && list.f_size() == 0 &&
         list.b_size() == 0 && list.type_size() == 0 &&
         list.shape_size() == 0 && list.tensor_size() == 0;
}

        current_index_path_.pop_back();
      }
      return;
    }
    // We don't differentiate between tuples and lists.
    case StructuredValue::kListValue: {
      const ListValue& list = value.list_value();
      for (int i = 0, e = list.values_size(); i < e; i++) {
        current_index_path_.push_back(builder_.getI64IntegerAttr(i));
        RecursivelyFindLeaves(list.values(i));