encodePreservingSharedIdentityOf(value) { doEncode(value) }
    }

    override suspend fun ReadContext.decode(): T =
        decodePreservingSharedIdentity { doDecode() }

    protected
    abstract suspend fun WriteContext.doEncode(value: T)

    protected
    abstract suspend fun ReadContext.doDecode(): T

    override suspend fun WriteContext.doEncode(value: TransformStepNode.InitialTransformStepNode) {
        writeLong(value.transformStepNodeId)
        write(value.targetComponentVariant)
        write(value.sourceAttributes)
        write(unpackTransformStep(value))
        write(value.inputArtifact)
    }

    override suspend fun ReadContext.doDecode(): TransformStepNode.InitialTransformStepNode {

    override suspend fun WriteContext.doEncode(value: TransformStepNode.ChainedTransformStepNode) {
        writeLong(value.transformStepNodeId)
        write(value.targetComponentVariant)
        write(value.sourceAttributes)
        write(unpackTransformStep(value))
        write(value.previousTransformStepNode)
    }

    override suspend fun ReadContext.doDecode(): TransformStepNode.ChainedTransformStepNode {

		// timestamps.
		ByteStringToTime: cbor.ByteStringToTimeAllowed,
	}.DecMode()
	if err != nil {
		panic(err)
	}
	return decode
}()

// DecodeLax is derived from Decode, but does not complain about unknown fields in the input.
var DecodeLax cbor.DecMode = func() cbor.DecMode {
	opts := Decode.DecOptions()
	opts.ExtraReturnErrors &^= cbor.ExtraDecErrorUnknownField // clear bit
	dm, err := opts.DecMode()
	if err != nil {

	}

	// If we cannot decode, just return read quorum error.
	return nil, fmt.Errorf("%w (offline-disks=%d/%d)", errErasureReadQuorum, disksNotFound, len(p.readers))
}

// Decode reads from readers, reconstructs data if needed and writes the data to the writer.
// A set of preferred drives can be supplied. In that case they will be used and the data reconstructed.

    }

    override suspend fun ReadContext.decode(): NullValueSnapshot {
        return NullValueSnapshot.INSTANCE
    }
}


object IsolatedEnumValueSnapshotCodec : Codec<IsolatedEnumValueSnapshot> {
    override suspend fun WriteContext.encode(value: IsolatedEnumValueSnapshot) {
        write(value.value)
    }

    override suspend fun ReadContext.decode(): IsolatedEnumValueSnapshot {

        }
    }

    override suspend fun ReadContext.decode(): Array<*> =
        readArray {
            read()
        }
}


object ShortArrayCodec : Codec<ShortArray> {
    override suspend fun WriteContext.encode(value: ShortArray) =
        writeLengthPrefixedShorts(this, value)

    override suspend fun ReadContext.decode() =
        readLengthPrefixedShorts(this)
}

    assertNull(Punycode.decode("xn--a-9b.net"))
    assertEquals("a՚.net", Punycode.decode("xn--a-99b.net"))
    assertEquals("a溠.net", Punycode.decode("xn--a-999b.net"))
    assertEquals("a\uD8E2\uDF5C.net", Punycode.decode("xn--a-9999b.net"))
    assertNull(Punycode.decode("xn--a-99999b.net"))
  }

  @Test fun dashInPrefix() {
    testEncodeDecode(
      unicode = "klmnöpqrst-uvwxy",

    public void test_decode() {
        assertNull(permissionHelper.decode(null));
        assertNull(permissionHelper.decode(""));
        assertNull(permissionHelper.decode(" "));
        assertNull(permissionHelper.decode("D"));

        assertEquals("{user}guest", permissionHelper.decode("1guest"));
        assertEquals("{role}guest", permissionHelper.decode("Rguest"));

// A format holds an image format's name, magic header and how to decode it.
type format struct {
	name, magic  string
	decode       func(io.Reader) (Image, error)
	decodeConfig func(io.Reader) (Config, error)
}

// Formats is the list of registered formats.
var (
	formatsMu     sync.Mutex
	atomicFormats atomic.Value
)

// RegisterFormat registers an image format for use by [Decode].
// Name is the name of the format, like "jpeg" or "png".