func (b *Builder) Bytes() ([]byte, error) {
	if b.err != nil {
		return nil, b.err
	}
	return b.result[b.offset:], nil
}

// BytesOrPanic returns the bytes written by the builder or panics if an error
// has occurred during building.
func (b *Builder) BytesOrPanic() []byte {
	if b.err != nil {
		panic(b.err)
	}
	return b.result[b.offset:]
}

// AddUint8 appends an 8-bit value to the byte string.

		b.AddBytes([]byte(label))
	})
	hkdfLabel.AddUint8LengthPrefixed(func(b *cryptobyte.Builder) {
		b.AddBytes(context)
	})
	hkdfLabelBytes, err := hkdfLabel.Bytes()
	if err != nil {
		// Rather than calling BytesOrPanic, we explicitly handle this error, in
		// order to provide a reasonable error message. It should be basically
		// impossible for this to panic, and routing errors back through the