class DataObject
{
    public string Name;
    public unsigned int Age;
}

class RequestDescription
{
    int RequestTime;
}

void loadDataFromApi(
    string uri,
    Action<DataObject, RequestDescription> onFinishedLoadingCallback
)
{
    // use uri to call a service and load data
    // parse said data for a format

    onFinishedLoadingCallback(data, additionalInformation);
}