HasSiblings This trait is used by pages, files and users to handle navigation through parent collections Full class name: Kirby\Cms\HasSiblings kirby/src/Cms/HasSiblings.php#L15 $hassiblings->hasNext() $hassiblings->hasPrev() $hassiblings->indexOf() $hassiblings->isFirst() $hassiblings->isLast() $hassiblings->isNth() $hassiblings->next() $hassiblings->nextAll() $hassiblings->prev() $hassiblings->prevAll() $hassiblings->siblings()