code: func (a *API) FetchRuleSetGroups() (*[]RuleSetGroup, error) {
  	result, err := a.Get(config.RuleSetGroupPrefix)
  	if err != nil {
  		return nil, err
  	}
  
  	var rulesetGroups []RuleSetGroup
  	if err := json.Unmarshal(result, &rulesetGroups); err != nil {
  		return nil, err
  	}
  
  	return &rulesetGroups, nil
  }
docs: // FetchRuleSetGroups retrieves all rule set groups available to API Token.