toJson method
Implementation
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = <String, dynamic>{};
data['group_member_info_identifier'] = userID;
data['group_member_info_nick_name'] = nickName;
data['group_member_info_name_card'] = nameCard;
data['group_member_info_friend_remark'] = friendRemark;
data['group_member_info_face_url'] = faceUrl;
data["group_member_info_online_devices"] = onlineDevices ?? [];
return data;
}