*`label:` The label of the CAA record. (Optional. Default: `"@"`)
*`iodef:` Report all violation to configured mail address.
*`iodef_critical:` This can be `true` or `false`. If enabled and CA does not support this record, then certificate issue will be refused. (Optional. Default: `false`)
*`issue:` An array of CAs which are allowed to issue certificates. (Use `"none"` to refuse all CAs)
*`issuewild:` An array of CAs which are allowed to issue wildcard certificates. (Can be simply `"none"` to refuse issuing wildcard certificates for all CAs)
`CAA_BUILDER()` returns multiple records (when configured as example above):