Method Save

catboost/libs/model/model.cpp:1113–1163

void TFullModel::Save(IOutputStream* s) const {
    using namespace flatbuffers;
    using namespace NCatBoostFbs;
    ::Save(s, GetModelFormatDescriptor());
    TModelPartsCachingSerializer serializer;
    auto modelTreesOffset = ModelTrees->FBSerialize(serializer);
    std::vector<flatbuffers::Offset<TKeyValue>> infoMap;
    for (const auto& key_value : ModelInfo) {
        auto keyValueOffset = CreateTKeyValue(
            serializer.FlatbufBuilder,
            serializer.FlatbufBuilder.CreateString(
                key_value.first.c_str(),
                key_value.first.size()
            ),
            serializer.FlatbufBuilder.CreateString(
                key_value.second.c_str(),
                key_value.second.size()
            )
        );
        infoMap.push_back(keyValueOffset);
    }
    std::vector<flatbuffers::Offset<flatbuffers::String>> modelPartIds;
    if (!!CtrProvider && CtrProvider->IsSerializable()) {
        modelPartIds.push_back(serializer.FlatbufBuilder.CreateString(CtrProvider->ModelPartIdentifier()));
    }
    if (!!TextProcessingCollection) {
        modelPartIds.push_back(serializer.FlatbufBuilder.CreateString(TextProcessingCollection->GetStringIdentifier()));
    }
    if (!!EmbeddingProcessingCollection) {
        modelPartIds.push_back(serializer.FlatbufBuilder.CreateString(EmbeddingProcessingCollection->GetStringIdentifier()));
    }
    auto coreOffset = CreateTModelCoreDirect(
        serializer.FlatbufBuilder,
        CURRENT_CORE_FORMAT_STRING,
        modelTreesOffset,
        infoMap.empty() ? nullptr : &infoMap,
        modelPartIds.empty() ? nullptr : &modelPartIds
    );
    serializer.FlatbufBuilder.Finish(coreOffset);
    SaveSize(s, serializer.FlatbufBuilder.GetSize());
    s->Write(serializer.FlatbufBuilder.GetBufferPointer(), serializer.FlatbufBuilder.GetSize());
    if (!!CtrProvider && CtrProvider->IsSerializable()) {
        CtrProvider->Save(s);
    }
    if (!!TextProcessingCollection) {
        TextProcessingCollection->Save(s);
    }
    if (!!EmbeddingProcessingCollection) {
        EmbeddingProcessingCollection->Save(s);
    }
}

void TFullModel::DefaultFullModelInit(const NCatBoostFbs::TModelCore* fbModelCore) {
    CB_ENSURE(