toBuffer method
converts the object to binary data
Implementation
Bytes toBuffer() {
final payload = buf.Payload()
..accessTokenHashValue = accessTokenHashValue ?? ''
..audience = audience ?? ''
..authorizedParty = authorizedParty ?? ''
..email = email ?? ''
..emailVerified = emailVerified
..expirationTime = Int64(expirationTime ?? 0)
..hostedDomain = hostedDomain ?? ''
..issuedAt = Int64(issuedAt ?? 0)
..issuer = issuer ?? ''
..nonce = nonce ?? ''
..subject = subject ?? '';
return payload.writeToBuffer();
}