inherited

# File railties/lib/rails/engine.rb, line 361
      def inherited(base)
        unless base.abstract_railtie?
          Rails::Railtie::Configuration.eager_load_namespaces << base

          base.called_from = begin
            call_stack = caller_locations.map { |l| l.absolute_path || l.path }

            File.dirname(call_stack.detect { |p| !p.match?(%[railties[\w.-]*/lib/rails|rack[\w.-]*/lib/rack]) })
          end
        end

        super
      end