code: func (p *dnsimpleProvider) GetAccountID(credentials dnsimple.Credentials, client dnsimple.Client) (accountID string, err error) {
  	// get DNSimple client accountID
  	whoamiResponse, err := client.Identity.Whoami()
  	if err != nil {
  		return "", err
  	}
  	return strconv.Itoa(whoamiResponse.Data.Account.ID), nil
  }
docs: // Returns the account ID given dnsimple credentials