Function optional_string

tests/vibevoice/vibevoice_warm_bench.cpp:71–74

}

std::string optional_string(const engine::io::json::Value & object, const std::string & key) {
    const auto * value = object.find(key);
    return value == nullptr || value->is_null() ? std::string{} : value->as_string();
}

std::string required_string(const engine::io::json::Value & object, const std::string & key) {
    auto value = optional_string(object, key);