I found some of my old code

[text] p class ollection implements Ftnatndggegate Propurties puvate membes anap gnzmnn membes pivate onload allback fanction mivate isLoaded false 1oaded flag blic fonction addtemsobj skey null sovexmite false msthishukoa ng v L 3 I 1 sovenmite isset thismembes sken 1 en0 lmu insmnz 5mmn Bep sken abeady in vse. setum false smlsmmmns skep sobj Jelse thismembes sobj letum twe poblic fonction Imnnzltzmskzu sthischeckallback if isset thismem ns ke unset thismembews sktu tlse son Enncinstance Loy