Nginx PageSpeed Do I have to explicitly write the desired ngx_pagespeed version in custom_config.inc?

Spoiler: my question should be irrelevant with this info

Please fill in any relevant information that applies to you:

• CentOS Version: CentOS 7 64bit
• Centmin Mod Version Installed: 123.09beta01
• Nginx Version Installed: 1.11.8 (on ma way to 1.11.9)
• PHP Version Installed: 7.1.1
• MariaDB MySQL Version Installed: 10.1.20
• When was last time updated Centmin Mod code base ? : i dunno, there was a cronjob for it, and centmin said that it was up to date when i logged in, so~~

I think someone might have asked about this before, but I couldn't think up the right phrases for the keywords. So yeah, my question is on the title. As we know, if we want to enable ngx_pagespeed, we'll have to write NGINX_PAGESPEED=y in custom_config.inc (update me if my knowledge is already outdated) and then, I can't remember if it's a "must" or not, we also have to write NGXPGSPEED_VER and NGINX_PAGESPEEDPSOL_VER with the desired version (with '-beta' on the former). What if I want to just remain 'up-to-date' with the latest version whenever I rebuild my NGINX though? Can't I just remove NGXPGSPEED_VER and NGINX_PAGESPEEDPSOL_VER so that Centmin Mod will automatically choose the latest version available if I have NGINX_PAGESPEED=y? (experimenting this sounds risky for some reason, so I haven't tried - there should be many failsafes in Centmin Mod though, so I don't know what I'm afraid of) Thanks in advance btw!

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I didn't have NGXDYNAMIC_NGXPAGESPEED=y all this time but there didn't appear to be any issue with PageSpeed