code: func NewTCPChecker(ip net.IP, port int) *TCPChecker {
  	return &TCPChecker{
  		Target: Target{
  			IP:    ip,
  			Port:  port,
  			Proto: seesaw.IPProtoTCP,
  		},
  	}
  }
docs: // NewTCPChecker returns an initialised TCPChecker.