main.cpp

void draw(const my_class_t&, ostream& out, size_t position)
{
    out << string (position, ' ') << "my_class_t" << endl;
}

int main() {
    document_t document;
    document.reserve(5);

    document.emplace_back(my_class_t());
    document.emplace_back(1);
    document.emplace_back("Zwei");
    document.emplace_back(document);

    reverse(document.begin(), document.end());

    draw(document, cout, 0);

    return 0;
}