disable_clear!

# File activesupport/lib/active_support/descendants_tracker.rb, line 70
      def disable_clear! # :nodoc:
        unless @clear_disabled
          @clear_disabled = true
          ReloadedClassesFiltering.remove_method(:subclasses)
          ReloadedClassesFiltering.remove_method(:descendants)
          @excluded_descendants = nil
        end
      end