code: func (a *API) FetchRuleSets() (*[]RuleSet, error) {
  	result, err := a.Get(config.RuleSetPrefix)
  	if err != nil {
  		return nil, err
  	}
  
  	var rulesets []RuleSet
  	if err := json.Unmarshal(result, &rulesets); err != nil {
  		return nil, err
  	}
  
  	return &rulesets, nil
  }
docs: // FetchRuleSets retrieves all rule sets available to API Token.