updateUserStatus method
Implementation
@override
updateUserStatus(User user, String status) {
int matchingIndex = list.indexWhere((element) =>
(element.conversationType == ReceiverTypeConstants.user &&
(element.conversationWith as User).uid == user.uid));
if (matchingIndex != -1) {
(list[matchingIndex].conversationWith as User).status = status;
update();
}
}