code: public SignatureRequestList getSignatureRequests(int page) throws HelloSignException {
          return new SignatureRequestList(
                  httpClient.withAuth(auth).withGetParam(AbstractResourceList.PAGE, Integer.toString(page))
                          .get(BASE_URI + SIGNATURE_REQUEST_LIST_URI).asJson());
      }
docs: Retrieves a specific page of the current user's signature requests.
  
  @param page int
  @return SignatureRequestList
  @throws HelloSignException thrown if there's a problem processing the
  HTTP request or the JSON response.