Could you elaborate?
They use comments for compilation directives, build instructions, code generation and other such stuff.
https://dave.cheney.net/2018/01/08/gos-hidden-pragmas
https://dave.cheney.net/tag/build-constraints
https://blog.carlmjohnson.net/post/2016-11-27-how-to-use-go-...
Don't check out Golang then...