[QUERY][DNS] CNameRecord can't be created because DnsString only has an internal constructor

[ChenglongLiu]

Library name and version

Azure.ResourceManager.Dns 1.1.1

Query/Question

DnsString only has internal constructor and cannot be instantiated.

            var cnameRecord = new CNameRecord(
                new ResourceRecordInfo(
                    domainName: queryDomain,
                    recordType: ResourceRecordType.CNAME,
                    recordClass: QueryClass.IN,
                    timeToLive: 3600,
                    rawDataLength: 0),
                canonicalName: ?? DnsString can't be created here

Environment

No response