code: func (m *IncomingMessage) IsEventBotAddedToGroup() bool {
  	if (len(m.NewChatMembers) > 0 && m.NewChatMembers[0].ID == m.BotID) || m.GroupChatCreated || m.SuperGroupChatCreated {
  		return true
  	}
  	return false
  }
docs: // IsEventBotAddedToGroup returns true if user created a new group with bot as member or add the bot to existing group