    # File lib/action_controller/request.rb, line 12
        def self.relative_url_root=(relative_url_root)
          ActiveSupport::Deprecation.warn(
            "ActionController::AbstractRequest.relative_url_root= has been renamed." +
            "You can now set it with config.action_controller.relative_url_root=", caller)
          ActionController::Base.relative_url_root=relative_url_root
        end