Not standart chek for odd topic level

[andreykyz]

I'd like to export my sensors. But this checker give me scary.

              if len(parts)%2 == 0 {
                       log.Warnf("Invalid topic: %s: odd number of levels, ignoring", t)
                       return
               }

Which standard are you implement?
If some user like %2 %3 or prefix cutting, they can implement it in prometheus scrapper