code: @Override
      @SuppressWarnings("checkstyle:linelength")
      public Page<AvailablePhoneNumberCountry> getPage(final String targetUrl, final TwilioRestClient client) {
          this.pathAccountSid = this.pathAccountSid == null ? client.getAccountSid() : this.pathAccountSid;
          Request request = new Request(
              HttpMethod.GET,
              targetUrl
          );
  
          return pageForRequest(client, request);
      }
docs: Retrieve the target page from the Twilio API.
  
  @param targetUrl API-generated URL for the requested results page
  @param client TwilioRestClient with which to make the request
  @return AvailablePhoneNumberCountry ResourceSet