Function workflow_optional_string

app/workflow/workflow.cpp:71–79

}

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

std::optional<std::string> workflow_optional_string(
    const engine::io::json::Value & object,
    const std::string & key) {
    const auto * value = object.find(key);
    if (value == nullptr || value->is_null()) {
        return std::nullopt;
    }