Why is {do_search} False in the last turn

[leekum2018]

As show in

Search-R1/search_r1/llm_agent/generation.py

Line 297 in 598e61b

responses_str, self.tokenizer.pad_token, active_mask, do_search=False

{do_search} is False in the last turn. This makes me confused, as the last turns can also be search actions.

Thanks!