code: func (cpnps *CountryPhoneNumberPriceService) GetPageIterator(data url.Values) *CountryPricePageIterator {
  	iter := NewPageIterator(cpnps.client, data, phoneNumbersPathPart+"/Countries")
  	return &CountryPricePageIterator{
  		p: iter,
  	}
  }
docs: // GetPageIterator returns an iterator which can be used to retrieve pages.