code: protected String buildLiveNextPageLink() {
          InternalStringBuilder builder = new InternalStringBuilder();
          AbstractRenderAppender appender = new StringBuilderRenderAppender(builder);
          buildAnchor(appender, _gridModel.getUrlBuilder().getQueryParamsForNextPage(), IDataGridMessageKeys.PAGER_MSG_NEXT);
          return builder.toString();
      }
docs: Build an HTML anchor that contains URL state for navigating to the next page of a data set.  The
  next page is calculated relative to the current location in the {@link PagerModel}
  @return the HTML markup for anchor to the next page