how can I change the AlbertModel's vocab
# 🚀 Feature request

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how can I change the AlbertModel's vocab
Thanks

## Motivation

I noticed that I can change the Bert's vocab by change the vocab.txt. But when I use the Albert's API, the document suggests:
tokenizer = AlbertTokenizer.from_pretrained('albert-base-v2'). So how can I change that.
Thanks

## Your contribution


This should help: https://github.com/huggingface/transformers/issues/1413#issuecomment-538083512<|||||>Tanks a lot.