public void Handle(UpdateChatPhoto update)
 {
     if (update.ChatId == _chat?.Id)
     {
         BeginOnUIThread(() => Delegate?.UpdateChatPhoto(_chat));
     }
 }
        public void Handle(UpdateChatPhoto update)
        {
            var chat = _chat;

            if (chat == null)
            {
                return;
            }

            if (chat.Id == update.ChatId)
            {
                BeginOnUIThread(() => Delegate?.UpdateChatPhoto(chat));
            }
        }