/// create Vec<PageRequest> from (total: u64, page_size: u64)pubfnmake_page_requests(total:u64,page_size:u64) ->Vec<PageRequest>{letmut result =vec![];let pages =PageRequest::new(1, page_size).set_total(total).pages();for idxin0..pages{let current_page =PageRequest::new(idx +1, page_size).set_total(total);            result.push(current_page);}        result}