code: private String pageUri(final UriTemplate uriTemplate, final int pageNumber, final int pageSize) {
          if (pageSize == MAX_VALUE) {
              return uriTemplate.expand();
          }
          return uriTemplate.set(pageNumberVar(), pageNumber).set(pageSizeVar(), pageSize).expand();
      }
docs: Return the HREF of the page specified by UriTemplate, pageNumber and pageSize.
  
  @param uriTemplate the template used to build hrefs.
  @param pageNumber the number of the linked page.
  @param pageSize the size of the pages.
  @return href of the linked page.