 how to freeze specific layers of TFbert model and just train a classifier? 
Could someone help me to freeze say first 3 layers of transformers.TFDistilBertModel.from_pretrained('distilbert-base-multilingual-cased'). I've tried recommendations for TF model from [#400](https://github.com/huggingface/transformers/issues/400) but it seems to freeze all layers at once.
Thanks in advance!
I googled it, this should be working:

https://colab.research.google.com/drive/1EAVhQGdVvXbCu8gGq0lZ9dOnN4jJtvAj?usp=sharing<|||||>@NielsRogge thanks for the help! <|||||>> I googled it, this should be working:
> 
> https://colab.research.google.com/drive/1EAVhQGdVvXbCu8gGq0lZ9dOnN4jJtvAj?usp=sharing


Thank you very much, this is very useful to me