public void EditUser(DeleteConversationOptions options, string userName)
 {
     if (options.HasFlag(DeleteConversationOptions.DeleteMessages))
     {
         LocalMessageRepository.RemoveMessagesByUser(userName);
     }
     if (options.HasFlag(DeleteConversationOptions.DeleteUser))
     {
         LocalUserRepository.DeleteUser(userName, UserHandler.GetInstance().User);
     }
     MessagingCenter.Send(this, MessageKeys.CONVERSATION_CHANGED, userName);
 }