| 75 | size_t Size() const override { return 0; } |
| 76 | |
| 77 | absl::Status ListKeys( |
| 78 | const google::protobuf::DescriptorPool* absl_nonnull descriptor_pool, |
| 79 | google::protobuf::MessageFactory* absl_nonnull message_factory, |
| 80 | google::protobuf::Arena* absl_nonnull arena, |
| 81 | ListValue* absl_nonnull result) const override { |
| 82 | *result = ListValue(); |
| 83 | return absl::OkStatus(); |
| 84 | } |
| 85 | |
| 86 | absl::StatusOr<absl_nonnull ValueIteratorPtr> NewIterator() const override { |
| 87 | return NewEmptyValueIterator(); |