onItemTap method
Implementation
void onItemTap(Conversation conversation) {
User? user;
Group? group;
if (conversation.conversationType == ReceiverTypeConstants.user) {
user = (conversation.conversationWith as User);
} else if (conversation.conversationType == ReceiverTypeConstants.group) {
group = (conversation.conversationWith as Group);
}
navigateToMessagesScreen(user: user, group: group);
}