code: @Override
      public Page<Session> nextPage(final Page<Session> page, 
                                    final TwilioRestClient client) {
          Request request = new Request(
              HttpMethod.GET,
              page.getNextPageUrl(
                  Domains.MESSAGING.toString(),
                  client.getRegion()
              )
          );
          return pageForRequest(client, request);
      }
docs: Retrieve the next page from the Twilio API.
  
  @param page current page
  @param client TwilioRestClient with which to make the request
  @return Next Page