code: func ChangeCustomSvcVar(
  	host_name string,
  	service_description string,
  	varname string,
  	varvalue string,
  ) *livestatus.Command {
  	return livestatus.NewCommand(
  		"CHANGE_CUSTOM_SVC_VAR",
  		stringifyArg("host_name", "string", host_name),
  		stringifyArg("service_description", "string", service_description),
  		stringifyArg("varname", "string", varname),
  		stringifyArg("varvalue", "string", varvalue),
  	)
  }
docs: // ChangeCustomSvcVar creates a new "CHANGE_CUSTOM_SVC_VAR" Nagios command.
  //
  // Changes the value of a custom service variable.