code: func QUICTransporter(config *QUICConfig) Transporter {
  	if config == nil {
  		config = &QUICConfig{}
  	}
  	return &quicTransporter{
  		config:   config,
  		sessions: make(map[string]*quicSession),
  	}
  }
docs: // QUICTransporter creates a Transporter that is used by QUIC proxy client.