Fix the PHP8.0 warning about private methods not allowed being final (#14)
Fix the PHP8.0 warning about private methods not allowed being final (#14)

Declaring a class method `final private` does not make sense because all `private` class methods are inaccessible by child classes anyway.

Co-authored-by: Kris Buist <5386c1e7bd9c410d07ffcc88fc2ceb29deafe180@frank.nl>
frankbv/php-enum