inherited

# File activerecord/lib/active_record/core.rb, line 309
      def inherited(child_class) # :nodoc:
        # initialize cache at class definition for thread safety
        child_class.initialize_find_by_cache
        unless child_class.base_class?
          klass = self
          until klass.base_class?
            klass.initialize_find_by_cache
            klass = klass.superclass
          end
        end
        super
      end