$page->hasNext()

$page->hasNext(\Kirby\Cms\Collection|null $collection = null): bool

<?php
if ($page->hasNext()) {
  echo $page->next()->url();
}
?>

<?php
$collection = $page->siblings()->sortBy('date', 'desc');
if ($page->hasNext($collection)) {
  echo $page->next($collection)->url();
}
?>