prices_number.go
func (cpnps *CountryPhoneNumberPriceService) GetPage(ctx context.Context, data url.Values) (*CountriesPricePage, error) {
	return cpnps.GetPageIterator(data).Next(ctx)
}
func (cpnps *CountryPhoneNumberPriceService) GetPage(ctx context.Context, data url.Values) (*CountriesPricePage, error) {
	return cpnps.GetPageIterator(data).Next(ctx)
}
// returns a list of countries where Twilio phone numbers are supported