DnsResolver = ref object of NameResolver
  nameServers*: seq[TransportAddress]

proc new(T: typedesc[DnsResolver]; nameServers: seq[TransportAddress]): T:type {.
    ...raises: [].}

method resolveIp(self: DnsResolver; address: string; port: Port;
                 domain: Domain = Domain.AF_UNSPEC): InternalRaisesFuture[
    seq[TransportAddress], (CancelledError, TransportAddressError)] {.
    stackTrace: false, ...raises: [], gcsafe, raises: [], raises: [],
    tags: [RootEffect].}

method resolveTxt(self: DnsResolver; address: string): InternalRaisesFuture[
    seq[string], (CancelledError,)] {.stackTrace: false, ...raises: [], gcsafe,
                                      raises: [], raises: [], tags: [RootEffect].}