code: func (h Host) Rescan() (scan Scan) {
  	return Init().
  		AddPorts(h.parentScan.configPorts...).
  		AddTCPPorts(h.parentScan.configTCPPorts...).
  		AddUDPPorts(h.parentScan.configUDPPorts...).
  		AddHosts(h.Address).
  		AddFlags(h.parentScan.configOpts...)
  }
docs: // Rescan the target. Normally used for finding differences between scans
  // at two points in time.