I can see this section from 90.1-2019:

but I don't think I'm finding the relevant code in os stds here. I did find the relevant code under 2013 subclass though:
https://github.com/NREL/openstudio-standards/blob/429974633cf77f8386e838479b6dd69116a40805/lib/openstudio-standards/standards/ashrae_90_1/ashrae_90_1_2013/ashrae_90_1_2013.PlantLoop.rb#L10-L40
so, I'm assuming the same subclass should be available under 90.1-2019? or if it is unavailable in 2019, will it crawl back to find the method from 2013?
I can see this section from 90.1-2019:
but I don't think I'm finding the relevant code in os stds here. I did find the relevant code under 2013 subclass though:
https://github.com/NREL/openstudio-standards/blob/429974633cf77f8386e838479b6dd69116a40805/lib/openstudio-standards/standards/ashrae_90_1/ashrae_90_1_2013/ashrae_90_1_2013.PlantLoop.rb#L10-L40
so, I'm assuming the same subclass should be available under 90.1-2019? or if it is unavailable in 2019, will it crawl back to find the method from 2013?