Hmp_pathabund.pcl

Hello,

I would like to know how to get to the * [hmp_pathabund.pcl] format mentioned in: (https://raw.githubusercontent.com/biobakery/biobakery/master/test_suite/biobakery_tests/data/humann/input/hmp_pathabund.pcl).
The tutorial moves from .tsv files with no metadata included to this other format. Seems like there is a missing step perhaps?

Thank you very much!
Kind regards,
M