# File lib/vendor/windows/lib/rb-fchange/native/flags.rb, line 69
      def self.from_mask(mask)
        constants.map {|c| c.to_s}.select do |c|
          next false unless c =~ /^FILE_NOTIFY_CHANGE_/
          const_get(c) & mask != 0
        end.map {|c| c.sub("FILE_NOTIFY_CHANGE_", "").downcase.to_sym} - [:all_events]
      end