Matplotlib legends and title example using graph-tool

Hi, Firstly, Thank you for your work.

I am using your project to graph a big network. And now I want to add legends and titles.

Is it possible to post an example of how to do this?

For the moment I have a piece of code which is not working. And I cant find anything clear on how to do this in the documentation. This issue is more a request for a more accurate description of the documentation in this specific domain.

And it could be very usefull for people googling this.

# cairo backend is enabled
<...>
fig, ax = plt.subplots()
    width = 1000
    height = 1000

    ax.set_title('A title')

    graph_draw(g,
        vertex_text=g.vertex_index,
        #groups=g.vertex_properties["type"],
        vertex_fill_color=g.vp.color,
        vertex_font_size=13,
        output_size=[width, height],
        mplfig=ax, # this var is here
        output=filename+'-'+type+"-graph.png")

    plt.savefig(filename+'-'+type+"-graph.png")