DecodedMessage constructor
*[<Null safety>](https://dart.dev/null-safety)*
DecodedMessage(Message_Version version, DateTime sentAt, EthereumAddress sender, EncodedContent encoded, ContentTypeId contentType, Object content, {required String id, required String topic})
Implementation
DecodedMessage(
this.version,
this.sentAt,
this.sender,
this.encoded,
this.contentType,
this.content, {
required this.id,
required this.topic,
});