Does not benchmark_tx.py use make_packet in ofdm_packet_utils.py?

I`m running benchmark_tx.py .
In my thought, benchmark_tx has to use make_packet in
gnuradio/gr-digital/python/ofdm_packet_utils.py .
However, Although I inputted a print code for tracing in the middle of
make_packet codes , I could not see output on screen.
Does not benchmark_tx.py use make_packet in ofdm_packet_utils.py to make
a
packet??

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