code: func (a *API) FetchAccount(cid CIDType) (*Account, error) {
  	var accountCID string
  
  	if cid == nil || *cid == "" {
  		accountCID = config.AccountPrefix + "/current"
  	} else {
  		accountCID = string(*cid)
  	}
  
  	matched, err := regexp.MatchString(config.AccountCIDRegex, accountCID)
  	if err != nil {
  		return nil, err
  	}
  	if !matched {
  		return nil, fmt.Errorf("Invalid account CID [%s]", accountCID)
  	}
  
  	result, err := a.Get(accountCID)
  	if err != nil {
  		return nil, err
  	}
  
  	if a.Debug {
  		a.Log.Printf("[DEBUG] account fetch, received JSON: %s", string(result))
  	}
  
  	account := new(Account)
  	if err := json.Unmarshal(result, account); err != nil {
  		return nil, err
  	}
  
  	return account, nil
  }
docs: // FetchAccount retrieves account with passed cid. Pass nil for '/account/current'.