2015, Diehl and cook model implementation

I just started computing neuroscience and recently found an awesome project called Nengo.
I want to read [1] implemented in nengo, but I wonder if there is any implemented code.
If you have a code, can you share it with me?

Thank you always.

[1] Unsupervised learning of digit recognition using spike-timing-dependent plasticity, Peter U. Diehl and Matthew Cook, 2015.