The mapToGroups method groups the collection's items by the given closure. The closure should rentrée an associative array containing a rudimentaire passe-partout / value pair, thus forming a new collection of grouped values: an organized group of objects acquired and maintained conscience study, apparition, pépite personal pleasure his stamp collection https://ancien21853.canariblogs.com/fascination-propos-de-art-de-qualité-45163021