def connection
      @connection ||= Net::HTTP.new(TENDER_API_HOST, Net::HTTP.https_default_port).tap do |http|
        http.use_ssl = true
        # http.verify_mode = OpenSSL::SSL::VERIFY_NONE
        http.start
      end
    end
def connection
      @connection ||= Net::HTTP.new(TENDER_API_HOST, Net::HTTP.https_default_port).tap do |http|
        http.use_ssl = true
        # http.verify_mode = OpenSSL::SSL::VERIFY_NONE
        http.start
      end
    end
Returns a persistent connection to the server, reusing a connection of it was
 previously established.

 This method is mainly used for internal use but can be used to do advanced
 HTTP connectivity with the Tender API server.

 @return [Net::HTTP] The net/http connection instance.