NameResolver = ref object of RootObj

proc getHostname(ma: MultiAddress): string {....raises: [], tags: [RootEffect].}

proc resolveDnsAddr(self: NameResolver; ma: MultiAddress; depth: int = 0): InternalRaisesFuture[
    seq[MultiAddress], (CancelledError, MaError, TransportAddressError)] {.
    stackTrace: false, ...raises: [], gcsafe, raises: [], raises: [],
    tags: [RootEffect].}

proc resolveMAddress(self: NameResolver; address: MultiAddress): InternalRaisesFuture[
    seq[MultiAddress], (CancelledError, MaError, TransportAddressError)] {.
    stackTrace: false, ...raises: [], gcsafe, raises: [], raises: [],
    tags: [RootEffect].}

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

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