onMessageRead property

void Function({DateTime? atDate, String? byClientID, required Client client, required Conversation conversation, String? messageID})? onMessageRead

The sent message(ID is messageID) that send to conversation with receipt option, has been read by the client(ID is toClientID).

atDate means when it occurred.

Implementation

void Function({
  required Client client,
  required Conversation conversation,
  String? messageID,
  String? byClientID,
  DateTime? atDate,
})? onMessageRead;