code: func (bot *BotAPI) SetChatPhoto(config SetChatPhotoConfig) (APIResponse, error) {
  	params, err := config.params()
  	if err != nil {
  		return APIResponse{}, err
  	}
  
  	file := config.getFile()
  
  	return bot.UploadFile(config.method(), params, config.name(), file)
  }
docs: // SetChatPhoto change photo of chat.