What tokenizer.as_target_tokenizer() used for?

Beginners
1

Hi, as the title said. I just don’t understand the use-cases of this context manager
with tokenizer.as_target_tokenizer():

I have read the doc though
THANKS

2

according to understand differences in tokenization · Issue #18455 · huggingface/transformers · GitHub
this context manager is deprecated so don’t worry