function updateRangeValues() {
                if (paginationService.isRegistered(paginationId)) {
                    var currentPage = paginationService.getCurrentPage(paginationId),
                        itemsPerPage = paginationService.getItemsPerPage(paginationId),
                        totalItems = paginationService.getCollectionLength(paginationId);

                    scope.range.lower = (currentPage - 1) * itemsPerPage + 1;
                    scope.range.upper = Math.min(currentPage * itemsPerPage, totalItems);
                    scope.range.total = totalItems;
                }
            }
This function updates the values (lower, upper, total) of the `scope.range` object, which can be used in the pagination
template to display the current page range, e.g. "showing 21 - 40 of 144 results";