in react-paginate package what is the purpose of herfBuilder

Question

               <ReactPaginate
                hrefBuilder={(currentPage) => { <a href={currentPage}>hello</a> }}
                previousLabel={"previous"}
                nextLabel={"next"}
                breakLabel={"..."}
                pageCount={pageCount}
                marginPagesDisplayed={2}
                pageRangeDisplayed={3}
                onPageChange={handlePageClick}
                containerClassName={"pagination justify-content-center my-5 "}
                pageClassName={"page-item"}
                pageLinkClassName={"page-link"}
                previousClassName={"page-item"}
                previousLinkClassName={"page-link"}
                nextClassName={"page-item"}
                nextLinkClassName={"page-link"}
                breakClassName={"page-item"}
                breakLinkClassName={"page-link"}
                activeClassName={"active"}
            />

acctully i want to make a new link every time when i click the new page button