)
            {
                var className = buttonClassNamePrefix;
                className += isEnabled ? "enabled" : "disabled";
                return className;
            }

            var hasNextPage = lastPage.pageNumber == -2;
            var hasPreviousPage = firstPage.pageNumber == -1;
            var buttonClassNamePrefix = "ms-promlink-button-";
            var nextPageContainerClassName = getPagingContainerClassName(buttonClassNamePrefix, hasNextPage);
            var previousPageContain