Function workflow_has_field

app/workflow/workflow.cpp:66–69

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

bool workflow_has_field(const engine::io::json::Value & object, const std::string & key) {
    const auto * value = object.find(key);