V2TimConversation constructor
      
      V2TimConversation({ 
    
    
- required String conversationID,
- int? type,
- String? userID,
- String? groupID,
- String? showName,
- String? faceUrl,
- String? groupType,
- int? unreadCount,
- V2TimMessage? lastMessage,
- String? draftText,
- int? draftTimestamp,
- List<V2TimGroupAtInfo?> ? groupAtInfoList,
- bool? isPinned,
- int? recvOpt,
- int? orderkey,
- List<int?> ? markList,
- String? customData,
- List<String?> ? conversationGroupList,
- int? c2cReadTimestamp,
- int? groupReadSequence,
Implementation
V2TimConversation({
  required this.conversationID,
  this.type,
  this.userID,
  this.groupID,
  this.showName,
  this.faceUrl,
  this.groupType,
  this.unreadCount,
  this.lastMessage,
  this.draftText,
  this.draftTimestamp,
  this.groupAtInfoList,
  this.isPinned,
  this.recvOpt,
  this.orderkey,
  this.markList,
  this.customData,
  this.conversationGroupList,
  this.c2cReadTimestamp,
  this.groupReadSequence,
});