# File lib/rack/cors.rb, line 68
      def debug(env, message = nil, &block)
        if @debug_mode
          logger = @logger || env['rack.logger'] || begin
            @logger = ::Logger.new(STDOUT).tap {|logger| logger.level = ::Logger::Severity::INFO}
          end
          logger.debug(message, &block)
        end
      end