Almost same as DecryptedMessage but avoids recursion
Optional
see DecryptedMessage.commitDelay
see DecryptedMessage.crlNewDistributionPoints
see DecryptedMessage.hasEpochChanged
see DecryptedMessage.identity
see DecryptedMessage.isActive
see DecryptedMessage.message
see DecryptedMessage.senderClientId
Almost same as DecryptedMessage but avoids recursion