/** Serializes this request. */ @Override ChannelBuffer serialize(final byte server_version) { if (server_version < RegionClient.SERVER_VERSION_095_OR_ABOVE) { return serializeOld(server_version); } final MutateRequest req = MutateRequest.newBuilder() .setRegion(region.toProtobuf()) .setMutation(toMutationProto()) .build(); return toChannelBuffer(MUTATE, req); }