}
	b.AddUint16(s.cipherSuite)
	addUint64(&b, s.createdAt)
	b.AddUint8LengthPrefixed(func(b *cryptobyte.Builder) {
		b.AddBytes(s.secret)
	})
	b.AddUint24LengthPrefixed(func(b *cryptobyte.Builder) {
		for _, extra := range s.Extra {
			b.AddUint24LengthPrefixed(func(b *cryptobyte.Builder) {
				b.AddBytes(extra)
			})
		}
	})
	if s.extMasterSecret {
		b.AddUint8(1)
	} else {
		b.AddUint8(0)
	}

	})

	return b.Bytes()
}

func marshalCertificate(b *cryptobyte.Builder, certificate Certificate) {
	b.AddUint24LengthPrefixed(func(b *cryptobyte.Builder) {
		for i, cert := range certificate.Certificate {
			b.AddUint24LengthPrefixed(func(b *cryptobyte.Builder) {
				b.AddBytes(cert)
			})
			b.AddUint16LengthPrefixed(func(b *cryptobyte.Builder) {
				if i > 0 {

func (b *Builder) AddUint16LengthPrefixed(f BuilderContinuation) {
	b.addLengthPrefixed(2, false, f)
}

// AddUint24LengthPrefixed adds a big-endian, 24-bit length-prefixed byte sequence.
func (b *Builder) AddUint24LengthPrefixed(f BuilderContinuation) {
	b.addLengthPrefixed(3, false, f)
}

// AddUint32LengthPrefixed adds a big-endian, 32-bit length-prefixed byte sequence.